- Great workout
- Olympic sport
- Japanese culture (learn to count to 10 in Japanese)
- Easy to find a decent school worldwide
- Throws are effective in self-defence situation - slamming someone into pavement and running away is usually a good idea
- A good complementary art if you're thinking of MMA, a very good bridge between striking and ground fighting
Cons:
- It became too sporty, much less focus on the martial art application
- With the sport rules, there is also less emphasis on ground combat (newaza - exactly the opposite of the daughter art BJJ)
- A lot of dodgy schools our there (McDojos)
- Heavy reliance on Gi techniques