Sounds like you've been trained to take care of yourself, which is a good thing when not taken to extremes. As a teaching professional I have to point out, however, that we are these days focussed on teaching children to cooperate and collaborate - they are taught that "we are all in this together".But this is a game and in game there's competition and in competition there are winners and losers. It feels like we're trying to make this 'everyone's a winner'. I grew up learning to win and lose. And dealing with people who bother me and taking care of my own schnazz. I don't need to be hand-held. Some of the best and greatest moments of my gaming career are when someone has made me mad as hell. And I dealt with it myself.
Or, if interpreted from the point of view of power games (which is certainly not the intention of the education system): It's not holding hands - it's being good to others, so that they will not kill you when you turn your back to them...
Also, there are a lot of cooperative and collaborative games: just take a look at role-playing games etc.