Am I right ?

Every now and then, one hears straight, homophobic men (it usually seems to be men ?) criticize gay marriage by arguing "Next, I'll be allowed to marry my goat" (or something similar). Usually something involving animals. What is wrong with that argument ? What can another person provide, which animals cannot ? That's right: informed consent. By ignoring this aspect, these men are saying that consent from their partner-to-be isn't required; thus it follows: marriage can be forced upon women. And indeed many places in the world we hear about arranged marriages, sometimes with horrible consequences. This mindset damages more than the women, it corrupts the men, too.