I'm literally the only person in my department who isn't married, in a serious relationship or has children. Oh, and I'm the only friendless one too. Most of these people are younger than me/my age and they've accomplished more - I feel like I am so behind in life now. FML.
^ Just be aware that out of all of those other people in your department that are married/in serious relationships, there would be some that are actually unhappy.
In fact there are probably some who are insufferably miserable in their 'coupled' lives, but are financially constrained or too scared to leave their partners for many other reasons.
I will bet you that there are many who look at you and
wish they were single and childless like you, however the thought of societies negative future opinion of them, is forcing them to stay where they are.
One benefit of getting older is that you discover through a life of careful observation, that although many people
pretend that the grass is greener on the other side of the fence, you discover that for many, it is all smoke and mirrors.
Many couples will never admit they are miserable however, because some like to use the
appearance that their 'grass is greener' to show off to others. And some never admit they are miserable because they are too scared of people's reaction towards them if they let it be known they made a mistake.