The accusation of being selfish is in itself selfish. Ayn Rand touched on this in "The Virtue of Selfishness," in that in almost every action, there is self-interest. Your parents are being selfish in wanting you to marry and settle down because they want grandchildren. Women want you to settle down because if you're young and successful, they want access to what you can give them (house, babies, etc.). And if the relationship fails, she walks away with the bulk of what you have. Other men that have taken the plunge look at you and are envious - they can never again have that life, so they want to drag you into their misery. All of these various people have their own motives and self-interest in wanting to see you married. People will employ the fatalistic "you'll be old and alone at the end of your life" argument to scare you into fulfilling THEIR needs, and not your own. Only you can decide what makes you happy. Not everyone is cut out for family life. I think it's more selfish to enter into a lifestyle that will make YOU miserable, and as a consequence make OTHERS miserable also.
Honestly, when you're in your 40s or so, you can still do the family thing if you choose. Of course, women will tell you THAT'S selfish, because "when your kid/kids are such and such age, you'll be such and such age and too old to do blah, blah, blah." You can worry about that when and if you choose. Live your life as YOU see fit bro. Who's gonna help you with all those regrets when you're older?
Honestly, when you're in your 40s or so, you can still do the family thing if you choose. Of course, women will tell you THAT'S selfish, because "when your kid/kids are such and such age, you'll be such and such age and too old to do blah, blah, blah." You can worry about that when and if you choose. Live your life as YOU see fit bro. Who's gonna help you with all those regrets when you're older?
"The best kind of pride is that which compels a man to do his best when no one is watching."