I hate debates, whether between members of the same party or opposing parties. They are the biggest weaselfests ever. Candidates shamelessly outright evade questions, the moderators ask dumb questions to begin with, and no real information is gained beyond the usual talking points the candidates hammer over and over.
Basically when you watch a debate, it’s for the same reason you watch postgame sports interviews with players or coaches: You’re waiting for somebody to screw up so bad there’s no coming back.
Update: Biggest irritant from moderators: Why do they ask candidates what they think about this, that or the other about the other candidates? I realize these are called “debates,” but they’re not, not really–they’re not the candidates debating each other on policies, they’re just chances to be questioned about their own. Don’t ask them personally embarrassing questions about what they think of the other guys.