Quote Originally Posted by thespectre4 View Post
I guess my last question is, if you can level all classes to 50, I guess there is no need to have more than one character? I guess it would make the initial leveling process faster, but that seems to be it.
You actually get an experience point boost on all classes lower level than your highest class, so other than not having the quests available leveling other classes on the same character is actually "faster".

Aside from what JoeDono said of circumventing lockouts for playing on multiple servers, I do it just to look different [note below] or go back and redo the easy starting stuff when I want to play but want to "take it easy".
There are fantasia potions for changing appearance, but using alts lets me with how a character looks/acts before committing to the fantasia, if desired.