Well, just look at the US. Political correctness is getting totally out of hand and the same is happening more and more in European countries.
Changing traditions causes a lot of entitlement in people who also feel that they should get a special treatment and it seems that there's no end to it. In a democratic society, entitlement from small groups is a societal cancer.
And equal legal partnership rights aren't even good enough for many. They absolutely need to have it called marriage, a word that has had a different religious meaning for hundreds of years. It's like these people intentionally try to cause trouble and I can understand why others don't want any of it.