Do you play alt characters, if so why?

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I originally created my alt to be a mule. (For those unfamiliar with the term: in Final Fantasy XI Online we would make alts to be extra storage space, as you could mail most items to your own characters. Essentially they were used for what our retainers are. Extra storage and on the plus side they could be used to sell 7 more items on the auction house each). Then I found out you can't mail stuff to yourself in XIV.

So I just played through the whole of 2.0 on my main back in 2013, then started running around on my alt for kicks. Ended up (hesitantly at first) leveling conjurer on her since a friend wanted someone to go in to dungeons with, then got white mage, and kept up on her to 50 before turning around and leveling it up on my main. I've been a main healer since.

Now my alt is 60 on whm, pld, and drk. >.> Though she won't get much love in stormblood, I'll at least eventually try to get her up to 70 on one job at least. I don't have as much time as I used to :P

Edit: also I made a character of each race; because why not? Around 2.4ish I leveled one of them up to 50 to replay the 2.0 story so it was fresh for the at the time upcoming 2.5/3.0 versions.