Scott Christian
Hero
I alluded to this earlier. (Not calling you out Bill.) But how many characters has anyone here played for a campaign or at least half a campaign? I am at a mere six (8 if you count the one that retired mid campaign and the one that died). I feel like that is a lot.Look, I want to believe it, but I've never met players like you. Perhaps you can show us examples of characters that you have really played that show that you made that kind of choice ?
In those characters I have explored the against type, with a wood elf barbarian. And I discovered the trade off for a low strength, great movement. I have played another against type, a half-orc wizard. For the first two sessions I didn't even cast a spell. Everyone thought I was a fighter. Then feather fall came in real handy!

This variety, in my opinion, has helped me understand the impact of the rules on character creation because I played them and spent time with them.
My point to all this is a speak from experience. I am sure it will differ from the others, but that is one way we learn.