As far as sports go, I started as an NBA fan, but I expanded into hockey and started following the NHL in the early 2000s or so. I like the Flyers.
There does seem to be a little more of an element of chance, which can make it more exciting... in basketball, the number of possessions of 48 minutes tends to even things out. But in hockey, you can have 1-0 games and 9-8 games. A weird deflection and suddenly you've got a goal, sometimes by the smallest of margins. There's always a sense that no lead is ever really safe, because anything can happen. That's not as much the case in basketball, where a 20-point lead in the 4th is rarely ever overcome.
Other than that... I dunno, I like them both, they're both fun to watch.