PE is the one case in which “greed is good”.
But why is it being greedy? PE isn’t an instant gratification thing, like grabbing all the candy from your younger sibling and stuffing it all in your mouth so that you don’t have to share. This shit ain’t easy, and if you’re willing to put in all that time and effort, then you definitely fucking EARNED it.
Why would you want to quit anyway? I find it enjoyable, but maybe as I get closer and closer to my goal, I’ll lose that “hunger” as well. I’d personally be afraid to quit. I think I will always do some kind of PE, even if it’s passively tugging on my dick every other day. Once you cemented your “last” gain, I can imagine that the laziness would set in and that continuing would seem pointless.
One thing that may make you lean towards quitting is if you’re married. Let’s say you get to point where she cannot take it if it were any bigger. Unless you divorce her, there’s no reason to continue doing PE, even if YOU would like it to be bigger.
Do whatcha want.