orcishgamer: Does this ever interfere with your enjoyment? It does me, and yet I'm compelled to do it quite a bit. Games like New Vegas are the worst, uhg!
Delixe: I'm surprised you mention New Vegas as an example. You only need to get most skills to 80 then with the comprehension perk all skill magazines buff them to 100.
My problem with New Vegas is not knowing about things. For example, not realizing there was an Int implant I "wasted" points leveling a skill beyond where it was useful. I mistakenly thought (probably when drunk) that taking the perk to get an extra TAG skill was a better idea than the perk that gives you an extra point for every skill book (duh!).
It always bothers me.
Also, when there is stuff like skill books in a game, I get to a point where I'm done naturally leveling all the skills I would use the most and then am compelled to spend oodles of time running around to collect all the skill books I don't yet have to get them to their target values (no one's making me of course, it's my own compulsion).
I picked New Vegas because:
1) You won't easily level every useful skill for your chosen playstyle
2) There's an insane amount of traveling and time taken out of doing the stuff you would normally do to run around and collect skill books, etc., compared to other games.
3) There's other interesting perks you might take, but the ones that boost skills are the ones you normally take, unless you are playing through with a melee bruiser and you don't need many skills.