Before the gay marriage movement, this nation gave its life over to adultery and lust. If men had kept their hearts pure and not given into pornography and cheering each other on to ogle women, gay marriage wouldn't not be a problem. The more depraved men became, the more they lusted. They destroyed marriages, children's lives and so on. Broken families create broken children who grow up which in turn create broken societies.
Old fathers, who spent years looking and lusting after women, are now shocked that their country has no morals and is in decay have only themselves to blame. If you stand for depravity, that is exactly what you get. If you sin, don't expect to control the outcome.