Well, I do like my Crusader. I took Paladin rather far in FFXI, and I loved tanking. I still do. I do feel a bit less special as a Crusader, simply because other jobs can do my job too (unlike FFXI, where there were really only 2-3 tanks). Also, I feel like I'd be limiting myself by only playing a job I know (at least in concept).
I love my scout. I've been having a lot of fun with him. The different way of approcaching situations and dealing with mobs is really interesting to me.
Priest hasn't gotten very far yet, but I know how valuable they can be in the game. I like the idea of being a key member of any party that I get into, and I enjoy that I can still do things other than heal from time to time. (Although I understand that may not always be the case, depending.)
Mage has been extremely fun. Sure, I only have a few spells, but I do rather well on very strong mobs for my level. It's pretty amazing to just blast a mob into smithereens.
Anyway, I'm still deciding, but at least I'm having fun while doing it! :D In the meantime, I hope that I'll make some friends in this game one day. I miss those the most. ;_;