I reference mine quite often, usually for a purpose I didn't originally think of. The name of that cool restaurant in a city you visit rarely? How about how many double rainbows did you get last year in June? Pinning down dates from a previous pet. Or the funny pet photo with a squirrel in it? Where were you on March 2nd when your credit card got charged for $1202.20? When did you meet your new significant other 3 years ago or so? What trail head was it that you saw a bear? What is the serial number, VIN, or similar for just about anything valuable you own... or owned. How old where you when you won that race?
The cost of a store a photo for life isn't much, seems silly to spend hours and hours trying to delete them, doubly so because mistakes will be made. Just tag them so you can find what you want. I was surprised how much tagging helped. Grand mothers poured over ever damn photo I tagged with the grand kids. Starting collections of wild animals we've seen by state. etc. When bored I find it rather fun to relive a vacation or hike. Even my kid seems to quite enjoy "visiting" places I've been.
Sure 95-99% of my photos don't get viewed, ever. So? Why waste man hours on useless photos, just make sure you are organized enough to find the 1-5% that you do care about.
Think of all the grandmas you would indirectly be providing more grand kid photos to!
For me that was the selling point of Google Photos. I switched in 2016 maybe - prior to that using Photos.app - and it was mind blowing. Thanks to machine learning, if you didn't think you wanted to tag waterfalls at the time of capture, it would still let you find them (I have 12 waterfall photos).
Unless you are a professional photographer, why waste man hours organising them when some algorithms and machine learning can do a good enough job?
It's very different from when a hobbyist takes photos just for their personal fun
I'm definitely not immune and I find that the satisfaction I get from my photo collection is inversely proportional to the size of my collection. At this point, I'm just lugging around this huge mass of data "just in case". There's no way I will ever have time to sort my images. There are probably 2000 wedding images alone, let alone the tens of thousands thousands of random snapshots that may or may not be something I ever care to see again.
At this point, I would almost prefer a smart solution opt-in solution similar to what Google photos provides for smart albums: "We found these images that would be good long-term. Save them indefinitely?"