My favorite drink is Diet Coke with peach schnapps.
Give me a good craft beer, a nice gin, or a good bottle of red any day of the week.
My life isn't missing anything by having a nice martini or port while everyone else has a Glenfiddick.
That said, I don't think your lemon juice example holds up - many of the most enjoyable things in life don't come naturally, but that doesn't mean you shouldn't try to acquire the taste for those things. Great alcohol, great food, great sex - most are not a "natural" taste growing up, and you can't fully enjoy them until you've acquired that taste. Having a dark drink on the rocks or with a splash of soda is definitely a great way to acquire the taste - and unlike lemon juice it's actually very enjoyable.
As good ol' Doc Holliday said: "In vino veritas"
If you're thirty it's time to pick a dark liquor and drink it straight. You can still drink beer, and yes you should have moved beyond beers that don't advertise what type of beer they are by now, but when out with other adult company drink a dark liquor (but no more than 2 or 3 drinks, "getting wasted" is not something adults do).