I've only ever commuted on my cyclocross bike. I did own a mountain bike once upon a time, but it's so long ago I can't really make any comparison.
I've been told by my DB that I need to switch to hard tail mountain bike with fatter tires because he worries about my safety.
I'm very reluctant to do this because I'm a snob and I like zipping past those on mountain bikes with knobby tires.
Having said that, I do have a tendency to ride a bit more recklessly than one should, and I do want to feel a bit safer on the road (I'm always paranoid about getting punctures now, and potholes in the winter are a definite hazard).
Have any of you gone from road to mountain bike? I know the normal progression is usually the opposite. While I love my bike, it's going to need a major overhaul soon, so rather than spending money on that, perhaps it's time for me to invest in a more sturdier horse?

