Sportsmanship and the differing cultures in sports

Let me begin by saying that the only organized sport I played after middle school is baseball, and that is where my passion lies. What I don't understand is the penchant that a lot of basketball players have for showboating. Obviously Blake Griffin comes to mind for reasons obvious to anyone who watched the game yesterday. (TOTAL ASSHOLE) But it's not just him - it seems like the cool thing to do is to yell at the top of your lungs after you make a dunk. Then there's the "reach in the cookie jar while heading back down the court" maneuver after someone *thinks* they've just made a good shot. Too many times they miss and they're now out of position to make a play on the rebound because of their premature celebration of themselves. I don't notice this much from our guys. Indeed, Manny and DeShawn appear to be pretty humble on the floor, not seeking much attention. In fact, I don't think any of our players really do all that stuff, but I could be wrong. Maybe it's the baseball player in me who knows that, in baseball at least, showboating is the quickest way to find a fastball heading straight at your head. On top of that, your teammates will tell you to STFU and play the game. I guess the whole point of this post is to see what you all think. I am just too old school? I've been interested in the different sport cultures, especially because I never played basketball, soccer, or football after middle school. P.S. If you're going to argue about how awesome it is to be a douchebag like Blake Griffin, we're obviously not ever going to agree, so go ahead and save your breath.