I went on this site for a while before I finally decided to actually make an account.
The first time I tried to make an account I think something went wrong because my account never seemed to have gotten made, so then I think I gave up for a bit before trying again and then it worked.
I don't remember why I specifically joined, it was probably just because I wanted to join in on the conversation since I went on this site a lot anyway. I remember when I would go on the site that I would see a lot of posts (good and bad) that I wanted to reply to as well, so that was probably a reason.