No, I honestly don't like minigames much either, and it's pretty difficult for games centered around them to keep me very interested most of the time. They're fun with friends, yes, but so are lots of other games with more engaging mechanics. And heaven help you if you have no one to play with, they're often a bore alone...at least to me, anyway. The only real exception is Warioware, since microgames are actually pretty fun to play both alone and with others. I'm not sure what it is about them that I enjoy, but whatever! (I must admit that I've only ever played Smooth Moves, though...)
Anyway, I've played Call of Duty a grand total of three times in my life, one of them being alone on a slightly older title for the PS2 and the others being multiplayer on a relative's Xbox 360. All three times, I had fun! I don't see much that's really wrong with the games, per se, it's just that I honestly can't remember their names or what the difference between all three were.
As for the worst game I've ever played...I can't really say! I don't remember playing any games that I legitmately disliked so much that I simply decided to never play them again. The most mediocre/buggy game that I've played is probably LavaCat, though.