I did regularly it for a while back, and it's fun, mostly because it's almost like tennis which is one of my most favorite sports. And since I'm not re-taking tennis yet, I still do badminton from time to time, since there's a club for it just near my house.
It is TOTALLY different from tennis
Badminton requires faster reaction and speed. Even know that you run in a smaller court, but 0.2 second of unfocus willl lead to losing a point.
Also, jumping and smashing are very important since they are the keys of winning a game. In tennis, you barely have to jump and smash.
Further more, drop shots can be done PERFECTLY in badminton(touching the net). Unlike tennis, drop shot needs spins and slow.