Any type of competitive sport is important in the terms of the lessons you learn from it. Dedication, perseverance, and striving for personal excellence are lessons that will serve a person well off the playing field as well.
I'd guess any type of martial art because it benefits you in times of peril. But there are other sports that force you to become stronger. Football is a game that require you to be in the weight room all the time. You can make your muscles grow from doing that. Same idea with basketball.