Tennis is a goal of mine too.
As a teenager, I loved to play handball. And I've always loved and been really good at table tennis.
For me, the problem with tennis was that I had no upper body strength. Really, holding the racket itself was enough of a workout; I couldn't be swinging it all around on top of that.
Now that I'm stronger on top, I think I'll give it a try soon. I don't know anyone who plays though.
Maybe I'll be able to talk some ppl into giving it a try...