I guess it is only popular to the extent of what we see expressed in the public opinion polls. Today in Newsmax it was reported that according to the latest WSJ poll, the majority of Americans now support same sex marriage. Further, last November, for the first time, a number of states (all solid blue of course) did approve same sex marriage on ballot initiatives. Finally, although Prop 8 (defining marriage between one man and one woman) passed narrowly here in CA in 2008, I don’t think it would pass again, as the state has even moved even further to the Left since that vote was taken. Same sex marriage is now viewed by most in California as basic civil right and nothing short of sacrosanct.
I think approval is going in the wrong direction. We need to keep on fighting, but it may be inevitable. Their constant barrage on television sways the weak minded. Also, getting to the kids in school early is sick but effective.