Re: I'm still young to the game... why do you have to hold the ball...
In my country, it is disrespectful not to score as many points as you can. All my coaches told us that showing respect starts with not toying with your opponent and that we should beat the opposing team by the most points possible. Sure, the starters were off the court at the end of a blowout game, but the reserves still had to score as many points as they could. Had any of my former coaches seen us not trying to score when there was a free lane to the basket, we would have been benched at that very moment.
Showing respect can vary from country to country, I guess.