[JulianMorrison]

An encouraging counter-argument is to watch the way that age cohorts have changed their attitudes to gay marriage in successive surveys. Society as a whole has become a lot more supportive, very fast, and all ages have been changing their attitudes. It's not just that young supportive people are aging upward into older cohorts, but also that old people who had negative attitudes have been softening their opposition, and many have crossed over from opposition to support.

The idea that the old have fixed bad ideas is mistaken. All ages of people can be persuaded.