Started in high school to gain size and confidence. Put on a lot of muscle until early 20's but then stopped working out altogether for next 10 years once I was married with kids. Finally started back up last year with P90X and loved the results.

Of course there is the ego aspect of it in terms of wanting to look good, but the older I get the more I appreciate the health aspects of it as well. Main goals now are to 'feel good' meaning I can move my own bodyweight well and be as flexible as possible.