i love tennis
I do, too!  Striving to keep the ball out of your opponents reach is great fun and takes great skill.
i watch it on tv but playing is more fun
I agree.  Watching is enjoyable to see the experts, but playing is great for personal health and exercise.  Very little has changed in the rules of tennis since 1890. 
i play every chance i get
The modern game originated in Birmingham, England in the late 19th century.  This was originally known as lawn tennis.
i like ping pong also known as table tennis
Yes, ping pong is a much faster pace of play immediately after the serve.  It is a bit more demanding for quick reactions.