Coming from past experience, I feel it is quite selfish. I understand what some people will say, "You don't understand what it's like". That is entirely false, won't delve into that anymore.
The fact of the matter is that this will affect everyone around you. You can say your parents don't love you, you don't have any friends, etc., but they do love you. If they didn't, they would kick you out of the house for being a moneysink. But that's aside the point. I've experienced a feew suicides, and it tears families apart. They may of not had a picture perfect life, but they were managing just fine. Even in the case where her parents weren't attentive in the slightest, they still were devastated. The mother went into a deep depression for a long while, and the dad basically became a drunk to cope with it. That was a wake up call, about their poor parenting style, that they should not have had to experience. So yes, it is selfish. People care about you, and people love you. There are always people that you mean the world to.