So why didn't you say something along the lines of "I don't feel ready for marriage yet, I've only known you for less than two years." Rather than, like, "I don't believe in marriage because it's stupid"
You're essentially saying "I don't want to commit to anything at all" and that means you didn't treat your relationship seriously
Her chemical reactions and instinct just make her believe she wants a child. I doubt it would matter if it was with me or some loving hobo down the street.
There's more to a relationship than loving chemicals and hormones, Tony. If you don't love her as a person and aren't attracted to her romantically, why are you even in a relationship?