Also remember that 90+% of us are doing this as a fun hobby and for some of them part of the fun of the hobby is buying and trying new plastic. Not maybe the best way to win your local beer'n'weed dubs league, but if that's what turns someone's crank who am I to care?
Oh, sorry, I wasn't trying to imply that one shouldn't buy and try discs. If buying/trying and amassing discs is what brings some joy, then by all means have at it! I do think that if you want to get better at disc golf though, one should find something and stick with it.
I see a lot of option paralysis, to many discs to choose and a lack of confidence in the choice that is finally made. Then when the shot didn't go well, they blame the disc and choose a different one next time. To me, this doesn't sound like fun, but to each they're own.
I can give one example. A friend of mine and I play this one course all the time and one hole is a long sweeping anhyzer (a forehand is not really a good option) and for the last three years, every time I throw he asks what disc it was. It's a beat Roc, it's what I throw every time. Here is a list of what I have seen him throw; X-Comet, Z-Comet, Z-Meteor, Champ Mako3, G*Mako3, Roc, V-Roc, M4, Stingray, Claymore, Truth, Buzzz, Nebula, Warship and I'm sure there are probably a few I can't recall. My point is, he gets annoyed because he can't consistently make the shot and he is clearly not having fun. He just keeps trying more and more discs instead of just learning the shot.
Anyway, enough of my rambling. Folks can get their enjoyment where ever they can. Personally, my enjoyment comes from making nice shots and having boxes of discs in my basement brings me anxiety!