I road ride, mountain bike and sometimes will ride home if DH brings me to work but I don't consider myself a commuter.
I like road riding best especially when we can afford to travel. Like last year we went to the Davis Mountains of Texas and New Mexico for riding. When it is the same roads all the time I try to focus on the new farm animals. I like looking at houses and stuff too. 
Mountain biking is fun but it is really hard and DH is good so it is frustrating because I want to stay on the beginner level trails but that doesn't offer much variety. I don't desire to improve rapidly which he doesn't get but that is how I am. My passion is road with a change of scenery so I hit the trails.
I found my mountain bike used on Craigslist for $200. It was a rare find of a pretty decent one in good condition but it happens. She is good enough for a beginner.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan