1. What kind of bicycle(s) do you ride?

Road, cyclocross, and a hybrid that doesn't have a a saddle yet.
2. Do you do anything except ride during the riding season? (work, clean house, cook, take care of parents, etc.)
Yes. Not so much clean but I was both working and going to school this summer.
3. Do you ride in bad weather? What kind of weather will you not ride in? (i.e., severe downpour, high winds, temperate, etc.)
Light rain? Sure. Downpour? Only if I get caught in it. I also don't do very hot weather and high winds.

4. Do you have apparel to ride in all kinds of weather?

Yep.
5. Do you ride at night? (something I absolutely refuse to do)
Yes. Only on bike paths. I bought some good lights.

6. Do you use clipless pedals? Does anyone only use plain pedals?
Clipless on two of three bikes.

7. How many mph do you average?
14-16 (road bike, flat ground); 12-14 (cross bike, pavement, flat ground)

8. Do you ride mostly on trails or on roads?
Back in Ohio, mainly trails. Here, roads or paths.

9. Are the trails/roads or flat, hilly, steep hilly, or mixture?
Roads back home were pretty hilly in places. Trails were flat.
Here, mixture. Tucson itself is flat, but I live further out, where it can be hilly.

10. Do you do most of your riding alone, with someone else, or in groups?
Back home: mostly by myself or with people from work.

Any other things you can tell me would be greatly appreciated. I would like to increase my measly 500 miles to at least 1500 next year!
Don't feel pressured to do the same thing as other people. Ride as much or as little or you want.