I can understand that. I find actual conversation really hard (Well, generally on the odd chance I've got something to say then it's easy)... luckily most of the time IRC isn't about actual conversation so I find myself talking. It's probably more that way at night though.
I haven't been around for most of the conversation and I can't be bothered reading and making sense of w.e they're talking about let alone contributing. I don't even know why I'm on IRC right now, lol... Is it a similiar reason for you?