I made one at first so that I can save my game on my profile so I can just log in anywhere and play my saved games. Then I got interested on these forums. That's where I am most of the time.
i made my ag account for the last castle like i never knew it worked for profile page or other games but then my friend told me about his profile page so i had to get one and then i found out ii already had one hehe
There are a couple of reason I made an account on AG... first of all, when Colony first came out you only needed to make an in-game account to play I'm pretty sure. However in version whatever you had to have an account on AG to play as an actual user. This is the main reason I made an account. I also wanted to rate a lot of the games I liked, and saw "you must be logged in to post a comment!" Those are more of secondary reasons.
I had more than one reason. One was that I wanted to save my progress on games and another is that I wanted to rate and comment on some of the games. There are other smaller ones, but those two are my main reasons for making an Armor Games Account.