I did try to play a druid once. He was fresh out of Candlekeep and ran into a single (!) Hobgoblin. My druid and the Hobgoblin took swings at each other for long, long minutes. I was sitting there with my mouth open and then finally terminated the game. IIRC I created a bard after that and had a very nice, satisfying game.
For me, druids are the least attractive class.
BG1: They've some spells no one else has access to. Call Lightning is a powerful spell but it only works outdoors.
The druid gets to shapeshift but only at the higher levels and then you get what? A wolf and some bears with abilities that won't help you at all and worse, aren't very interesting.
In BG2 druids get some real powerful spells like Creeping Doom and Nature's Beauty. But these are IMHO the only advantages you'll get with a druid and you have to wait a long, long time to get them.
The kits in BG2 aren't very interesting either IMHO - but some people have said they've enjoyed playing the Avenger because it's shapeshifting abilities are useful.
The druid stronghold in SoA I've no experience with.
But for me, the very worst aspect of the druid is the ridiculous 'there must be balance' philosophy which makes no sense at all, period.
It also makes no sense to me that a nature lover (and protector) would conjure up animals and sacrifice them in fights.
Obviously this is all very subjective and I'm sure there must be people out there who like druids.
