People should not marry because the existence of the institution of marriage is wrong.

Just as the existence of states is wrong.

and other institutions.

Relationships are the same.

commitment = addiction

And kids. I didn't think about it because I didn't want to disturb my comfort.

I like to invest in myself.

And I prefer not to waste my energy on unnecessary things (husband/bf, children, animals, plants should not be in the house).

What if I regret it when I'm old?

If I regret at 60, I will still be profitable as long as I don't live to 120 :))