A valuable life skill if you want to ever have a job or get paid.
If you live in the bubble where you experience this, congratulation you live a wonderfully privileged life, never interact with anyone or are totally oblivious to the experiences of all the people you interact with on a daily basis.
There are things in life that you won't enjoy but you need to do. Learning to do them anyway is in fact a life skill.
I've seen people follow their dreams into careers they chose because they wanted them, despite those careers not being paid well. They're all at least as miserable as the average person, because what they enjoyed is now work, and they don't have money for anything they now enjoy.
"Do whatever makes you happy" is a life plan for the financially independent. Most people simply don't have that luxury.
Sure, I see your point. I guess what it comes down to is: what percentage of your life do you spend doing that?
If you don't like doing laundry, then don't start a laundry service business.
Sometimes you have to eat a shit sandwich.
Or you can reach for the sandwich.
But also, many people choose to do something they hate so they earn more money. They could be just as privileged and choose not to, just so they can compete with the Joneses and consume more...
Honestly, I wish I had been taught that lesson early, so as to internalize it profoundly.
Even with a lot of discipline and self-control, going through each and every day without mind-altering substances at hand is pretty dang difficult.
Sure, once I was playing it, I was fine, but I cannot explain to you the sheer dread I felt opening up the case.
Have not played in decades, despite all those lessons and concerts and orchestra sessions.
But I'm glad for it, since it lets me jam or enjoy myself without having to put the practice in now from scratch. I do it for fun.
Even the smell of tree resin sometimes makes my stomach tighten with anxiety.
And yes practicing will result in them getting better.
I was briefly made to play violin as a child, and I definitely hated it (fortunately my parents recognized this and didn't push too hard). The reason is in retrospect obvious: violins are loud and piercing and played close to the ear. Nobody considered hearing protection back then. I learned recorder as an adult and the loud notes can exceed 100dB(A) measured at the ear (both alto and soprano recorders, and recorders have very limited dynamics). Violins seem to be at least as loud. I would hate to play without hearing protection no matter how skilled I become.
Even in instruments where you can more easily play softly like a piano, the design for loudness can cause suffering. Pianos are much bigger than they need to be now that we have amplification, with correspondingly wide and finger-straining keys. Steel string guitars are louder than nylon but hurt more to play (and even nylon can hurt depending on your individual hand size and shape). I expect there are many children suffering hand/finger pain from being forced to play various instruments and genuinely hating it regardless of their skill level.
When a child hates something, there's often a good reason for it that isn't obvious and that they don't have the communication skills to explain.
There are ages below which you are too young to play full-sized pianos, or play every interval an adult can play. That doesn't stop you playing it at all. What's more, your hands and fingers stretch. It isn't painful to play the piano.
The stuff about loudness is just rubbish. There is absolutely no need for hearing protection while playing the recorder (a very quiet instrument), the violin or the piano solo. You have no idea what you are talking about.
And I personally measured my recorders with an SPL meter and found them to reach over 100dB(A) at the ear (played indoors in an ordinary room with furniture but without acoustic treatment). The meter used does not have a traceable calibration but in all respects behaves as I would expect a correctly calibrated meter to behave. I have no reason to believe it is miscalibrated. Recorders are only quiet in the bass. The high notes require much higher air pressure and can be very loud. Perhaps you are fooled by the lack of distortion. I played without hearing protection at first, but I was disturbed by the prolonged discomfort this caused in my ears. I then recorded my playing and reproduced it with loudspeakers. I was shocked at how loud I had to turn the speakers up to reach a realistic level. I think it's easier to judge SPL from loudspeakers because they do have distortion which serves as a perceptual cue. Pure sounds can reach dangerous levels without sounding obviously loud. I also think the fact that I was playing the instrument myself and not just listening contributed to my misjudgement.
I once shocked my mom by clearly hearing what she whispered from across a quiet room. And not like a room in a home, this room was about the width of a house. I think people massively underestimate how sensitive hearing can be for some people.
The fruits are reaped when they (me!) get older. Like I mentioned in another comment, I can play along to a song I like, play a song that is a certain memory, jam with friends at a whim.
Those are not things I necessarily wanted to do when I was a kid. But the "forced" practice was required as a foundation to do what I want to today.
You can do any of those things without learning to read music. Ask me how I know