When you're writing, you're only a brain and some fingers, but drumming, you're involving all four limbs, and you're hearing stuff and you're converting your ideas into physical motions, getting physical feedback from things you are touching - it's pretty cool. It's a really a nice contrast to writing.
A lot of music fans are still interested in insightful perspectives on music - maybe even more interested than ever, since everyone needs help making sense of the incredible variety of sounds that have sprung up in the wake of the Internet revolution. There's a lot of room for unique, qualified voices who can provide good reads.
The online musical universe has become Balkanized, with many sites focusing on minute niches. That works well for reaching very specific demographics, which is wonderful for advertising, but it flies in the face of the common wisdom that people's tastes have become more diverse as music of any description has become a mouse-click away.
I'm always very careful to make the distinction between music criticism and music journalism. A lot of people don't. But criticism doesn't require reporting. You can write criticism at home in your underwear. On the other hand, journalism takes legwork - you have to get out there and see things and talk to people.