Earlier quoted context omitted.
> So, you think marriage shouldn't be available for straight people who are both infertile? The rest of your argument around mutual care is reasonable. There are more nuanced views than a blunt "if state support for marriage depends on procreation, let's ban marriage for infertile people as well.", which sounds like spite: if I can't get it, then those guys over there should not get it either because they are similar…
As any parent will tell you, pregnancy and childbirth are only the beginning of all that is involved in raising a child. And those can be contracted out: adoption has always been possible, and modern technology gives us the option of surrogacy. Plenty of gay couples are raising kids, and have been doing so for years. You're just trying to rationalize your prejudice by pretending it's about fertility.
PS. I'm a parent, thank you very much.