What's your least favorite kind of player?

[CommandConquerer]

Hmm, I seem to be a bit of a runner spammer on large maps, but I don't see how the strategy is easy to beat. I mean, I don't just tap on runners endlessly. I realize they are next to useless in actual attacks. I do alter my strategy accordingly, eg spawning more soldiers as opponents get closer to my base.
People I hate the most are turtles. Can't beat them with runner spam plus the game just draaaags on...