Because life is ridiculous, just do what makes you happy, not what others tell you. Just because someone says you need to marry and start a family to be happy, doesn’t mean it suits you. Doesn’t mean having a hot babe and being rich, it can be playing video games. What’s easier, reaching your goal of getting to a high level in a video game, or becoming a millionaire? The former takes less time, and I’d argue you would have the same happiness.
I’m not saying you should have no job, because you obviously have to pay rent, food, and clothing, the bare necessities. But is it that bad to just do what you want?