I'm not convinced that getting it "just right" is possible for some of us, me included. I want elements in my car that I know are mutually exclusive, i.e., dead reliable for street driving but having huge power; trackable suspension but comfortable on the road, etc. You get what I mean. As our expectations rise, the rational part of our brain accepts the compromise position, that one car can't be all things. But it's those extra little tweaks that keep me researching.
I compare it to finish painting on a house. Even though you keep decreasing the brush and/or roller size from a 3" brush to an artist's size, there comes a time when you finally say: OK, I'm done. It looks great now, and I'll look at touching it up again in xx years.
I haven't had that occur with any of the performance cars I truly cared about. It seems easier to admit that on a forum than to say it to a family member.