The sexual revolution started in the 60s. Mankind has an insatiable appetite for sliding down this slippery slope.
"For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature."
- Romans Chapter One
"28 And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient" Romans 1:28
The section that tells of God giving them over to a reprobate mind is terrifying.