Only been to one but it involved a pub and curry the night before, going to a bit hall with loads of fellow bass players (and basschatters), meet people, talk all things bass, try out a few basses I otherwise wouldn't have been able to and then watch a masterclass by a very talented bass player.
You're right. They're pretty awful really.
In all seriousness I enjoyed it but if it isn't your thing then so be it.