You live for yourself, obviously. I was a lot like you in the beginning, feeling that way, like "If there's no one to share my successes or my life with, it's all pointless." I discovered that it was often other people, almost always women, that brought me down.
Like >>2483 mentioned, there is so much to do in life, and a woman will only drag you down, force you to birth a kid, and then take that kid along with half of everything you own with her to repeat that with some other unsuspecting person whom she will more than likely feed a sob story of how you abandoned her.