This is something I've always been curious about, what motivates you in particular to blog? Is it just for the hell of it? Are you looking to gain traffic so you can monetize? Are you trying to jump start a career?
For me its a bit of a mixed bag. I've always had thoughts and theories about video games, and have spent time on a number of publications simply soaking in parts of the industry. I needed a creative outlet to get that out. On top of that, I love writing about the games industry, and would love to do it in a semi-professional fashion someday, so this is a way to improve/develop my writing.
So what motivates you to blog, and what keeps you going when things are tough?