“Why support abortion, gay marriage, and the homosexual agenda, at the federal level?”
That’s called a “straw man” argument.
I’m not suggesting supporting it. I’m saying that taking a stance one way or the other in the party platform is a mistake.
Aside from that, no nationally prominent Republican is advocating changing any of that at the Federal level that I’m aware of... Can you name an example?
The GOP exists for it’s platform, why would you be calling to end that platform and end the GOP as a party?
The pro-abortion, pro-gay, anti-American, anti-conservative left already has a party, in fact two, the democrat and the libertarian.
There is no replacement for the conservative GOP base, social liberals already vote democrat, and support that party.