I think firstly that yes it is true that this is the internet and yes, we can not help if people are rude, but I'm not sure if it is right to fall back on this and state 'well people can be rude, get over it, that's the internet'. I personally believe that most people on this board are nice and put forward their opinion kindly. However, there are others who are the opposite. So I think the best thing for an individual to do is to be the better person, be kind and not lash out at others, yet still enjoy open discussion where we can give our opinions feely and respectfully.
You receive what you give.