Why? That's a fair question. Allow me to answer you in three points, beginning with #1 and ending with #3.
1.) Everyone else has one
I love being part of the crowd. Sticking out and being different is strictly for squares. Conformity is for the coolest amongst us.
2.) I like to write
I do. And I'd like to do it more. Theoretically, this will help me to do it more by providing me with a new platform. Also, maybe somebody likes what I read and wants to hire me to do something for them. Which leads to number...
3.) I like to get paid for stuff
See About for more details, but that's about the size and shape of it. So, hire me, won't you?