I fall into both categories: sometimes I gamble alone, sometimes with friends. Honestly, I'm in a very active gambling environment. I have many gambling friends, and sometimes when I win, I give some of my winnings to them, or vice versa, when they win, they don't hesitate to give me some of their winnings. For me, as long as we're having fun, those actions are fine and don't harm me.
Honestly, I and some of my gambling friends share the same understanding that most games rely on luck, so we gamble abstractly in whatever way we like.