This thread has been done many times before, but I will still participate.
I get the depo shot because I don't want to have my period. I don't care if you like getting yours, I don't like getting mine. I'd rather not get all depressed while having sore boobs and a painful back for 1 week every month, let alone blood coming out of my vag for 4 days.
I'm also happily married. Having a baby isn't in our plans for the next 2 years but if it happens, whatever...even though it won't because I'm staying on depo for another year.