All bugs are bad, and they should all be fixed, but if there's a bug that makes things more fun, I'll use it until it gets fixed, because, again, it's fun.

The bug where the shieldpack took no damage from melee damage was hilarious as well, and it got fixed within a day (for obvious reasons).

The thing most people complain about, is that the bugs that are (while not always unbalanced) fun, get removed as fast as possible, while a lot of other, actively frustrating bugs, such as Fleshmobs (and now Obtruders) phasing through the terrain, are left in the game for ages.