Sincere Question for Conservatives

Al
I can appreciate many view points of conservative Americans: I am right of center myself. What I don't understand is why you have to pick this guy -Trump - to champion your values. Someone like Rubio agreed with Trump on all key conservative issues: reproductive rights, economics, as health care, etc. and Rubio, not perfect, isn't nearly as crazy or as embarrassing as Trump. Why are you pushing for such an inept and unstable person to lead your party and champion your values? For 2020, all of you are still saying Trump. But what about getting a real conservative or a real GOP to run? I think you can drive your conservative ideals without tying it to an awful person. There are plenty of descent conservative leaders you can back: What about Nikki Haley for 2020? Sincere Question here.