As a consciously single I disagree along the lines of this argument (not with the argument itself). You’re seeing lost relationships as something destructive, and sure it is, but also disregard what others do as something that you can get rid of without any harm (“no life anyway”). I like my life, who’s anyone to judge what is important in it or not. Our world-wide society has this trope. “Hey, these people have kids(!), and these are in relationships, etc etc. And you are single nolifer, your rights and opportunities can wait”. As if a kid or a partner were some kind of a universal voucher.