I have only played tennis twice in my life, but I really liked it.
I would say that tennis is among the most tiring of all sports. Really hard work.
Do you play much? I'm not very coordinated.
No because you are correct. You kind of have to be one with your racket and you have to make aggressive shots to overpower your opponent.
Wow, that's a very astute analysis.  I did take a P.E. class in college once where we learned to play Pickleball. 
Ah I believe I have played that before as well. Racket sports are very difficult and there is a huge gap between the talented ones and non talented.