trentonjoe
Explorer
Actually, I kinda do. I require the wizard to justify finding spells from the local library / academy and scribing them into his book. They don't magically appear at level up.
Likewise with feats. I expect a character who's taking the Actor feat to be practicing his skills of deception, disguise, etc before he purchases it in game.
Its not like learning these things in game is hard - there are systems in place for regular wizards to learn spells. Or for someone to pick up acting techniques
Obtaining the infusion of magic in the middle of a game in order to become a wild mage, however, is another matter. Transforming yourself from a human into a drow (there's actually a campaign in 4e that does that) requires actual strong story reasons.
I've played in both types of games over the years. I had a DM that paired the Cleric spell list down for me and told me what weapons my fighter couldn't use for various reasons and I've had guys say "I don't give a **** what you take Joe."
Both games were way fun, as long as the game is interesting and the story is engaging it doens't really matter (to me).