Lately I've been thinking about building a bike from the frame up. What I'd want it to be is a great commuter bike, but something I've had my hand in. I'm reasonably proficient with tools - I used to do simple repairs on my car, including changing the brake pads.

Is this something I ought to attempt? Or is it more complicated than it looks?

My current ride is a hybrid that I've put 2200 miles on. I've heard of touring bikes, but not very familiar with them. Would a touring bike be a better choice than a roadie?