If they're happy that's all that matters. I don't think anyone should be criticized for not having a life they didn't want to or couldn't for whatever reason.
There's this fundamental problem as I see it and we don't really have the technology to fix it that much:
Like Jason Statham in his 50s marries a woman in her early 30s and they managed to have a child. It is nearly impossible to find a reverse case of a man in his early 30s married woman in her 50s and having a child. I really think a lot of social differences are rooted in this biological difference until the technology can fully correct it.
Scroll Down to Read Other Opinions
I'm finding that happening too. My oldest cousin (36 years old) is ok with her life. She didn't want to deal with the dramas (ex: a future MIL hating her), complications and possible arguments in a relationship nor major responsibilities if having kids. A couple of her female co-worker yet still insisted that she should find a boyfriend at least and that it has to be sad and lonely her life. She doesn't think so.
She doesn't even want pets either. She's happy being single and not sharing her house with anyone nor any animal.
Yeah im not suprised