I've tried out Abyssea a few times and it seems people are the following things in one of these parties.

Short Tempered
Childish
Quick to insult
Unfriendly
Scary

Now I kept my mouth(so to speak) shut so nothing would happen too myself while in these parties but, jeez this place really does bring out the worst in people. Or the worst people just flock to Abyssea, something like that.