Are there any reasons aside from making money that people work?

People also work to give their life more meaning. It gives them fulfillment to do a hard day's honest work.

Probably to meet people, or to get degrees for high/collage schools. Sometimes you're requried to do stuff like that.

All of the answers are correct.
If you have children, you will run to get a job, just to get them out of the way :-))). Honestly, a mum needs to get out of the house and meet other people and a good side effect is to earn money. Another reason is, you get more self confidence when you see your work is honoured ( at home nobody will tell you: good job ).
1. "Comfort" of a schedule

2. Keep yourself busy

3. Source of social network

4. To improve life for others

5. Escape from other environments (home?!)

6. To gain experience in a particular field

7. To impress somebody

8. Exercise/physical activity

9. To keep a skill set sharp/up-to-date

10.Benefits (i.e. meeting interesting people, travel opportunities.)