Never an empty seat when you're watching a Leafs or Raptors game. The atmosphere and energy is contagious and it's a much better experience than watching the game at home. Prices have gone up lately for the Raptors (Leafs tickets has always been expensive), but definitely worth it just to be part of the environment in the stadium! Food is ridiculously expensive - eat before the game! A bottle of water or cup of pop is at least $6.
There is always a long line up to get in and out of the venue, but security and staff is very friendly and helpful! There's a ton of fan engagement at Raptors games so you're always entertained. Parking in the area is expensive, but trust me, it's worth it. You don't want to be packed into the TTC after a game. I'm not sure if they still have this, but they used to open up the rink to the public one day a year for free!