Let's Talk About Drills

Inspired by some of the discussion in the fly thread , I was wondering how you all feel about drills. Personally, they drive me nuts, yet everywhere people rave about TI and boy do my coaches like 'em. I find that generally drills just make me feel as though I'm learning to swim a way I will never actually swim, as opposed to helping me focus on one aspect of the stroke. For instance, last night, we were doing breaststroke drills and I spent the entire time trying to learn the drill as opposed to focusing on what we were meant to learn. Also, I tend to learn technique by figuring out what feels right, but with drills, it feels different because you aren't doing the full stroke. What about you?