I don't know. At the end of the day, it's a personal choice but as Swoly DEEZ NUTZ said it's about being a role model to a degree to. Not even that really. It's about representing your product on a global stage and not sending the message that half your players LOOK like thugs.
The Quaid brothers went to Bellaire High School...so did Star Trek TNG's Brent Spiner (Data), Chuck Knoblauch (sp?) and NBC's Sports Director Randy McIlvoy
i'm sure the percentage of MLB and NFL players with tattoos is on par with NBA players, you just don't see them.