Wow! You guys are amazing! Thank you all for the replies. They mean a lot. You've changed my view completely. I'm going to start from today. *does jig*
Good decision dude. My dad and my uncle were both surgeons. My Dad has been a fanatical snow-skier all his life and still skis black diamonds at age 85. Sure there will be times when you may have to put your second passion on "hold" for a while, but in the long run it will keep you fit and sane.
Me, well I'm a bit more laid back. I'm an art teacher. But when i've had an especially tough day dealing with the 100 or so students I teach every day, a little time doing forms or just hitting the bag really lets me get centered again.
Lastly, both the specialist who replaced my ACL and my regular doctor spent some serious time doing martial arts. When we talked about it, they both told me that they really valued the time they spent in MA. It also meant that they have had more insight into my physical issues... and has been very helpful to me.