Wow, layers of stupid just starting with the first quote. What does procreation have to do with marriage? Nothing. I'm sure it goes downhill from there: Ben Shapiro says Martians who visit Earth would be opposed to same-sex marriage [mediamatters.org]
Many people get married without the goal of having children. I perform weddings for a living and that is sometimes a question I ask, if they are planning to have a family, and increasingly many of the young heterosexual couples say no. On the flip side, I've performed some same sex weddings for couples who were excited to adopt an unwanted child.