Team sports where skill and teamwork are just as important, if not more so, than athleticism. Not that I have anything against athleticism (I was once accused of being an athlete many moons ago).. but as I age, it is nice to still be able to compete by using good technique and some brains.
The social aspects of teamwork is one of my favorite things. You have to know what you can do, as well as what your team and opponents can do. You then have to do things that help your team as much as possible, while making the opposition struggle as much as possible.
When teamwork works it is an amazing thing. Team sports taught me that. In today's society so much focus is on the individual, I feel many never truly understand this.
Sadly, I RARELY get to play anything anymore.
My new sport is chasing my brood.

No sport will pwn you like that one. It kills you on the endurance.. gives your biceps a killer workout, and is mentally challenging beyond my ability to describe. ( you parents know what I am talking about )