Less than you think, actually.
Homo marriage was struck down by vote in California, overwhelmingly crushed.
The homos screamed like stuck pigs.
(Squeal like a pig...)
The vast majority do not support it like you are saying.
It is entirely possible to believe that marriage should remain between a man and a woman while also believing that two adult homosexuals should not be prosecuted for a consensual relationship.
I know, because this is my opinion.