The problem is, many Republicans (myself included, until I recently became an independent) and independents feel that way now. When your own party feels that way, that's just not good. And when it clearly shows in the polls and the RNC, even worse.
Even if Trump wins (very possible), is that good for conservatives or the Republican Party? Nominating a person so non-inclusive, so vile and full of hate/spite/ego? What happens in 4 years (God-forbid 8, possibly less than 2 after impeachment), when the Republicans don't have a such a force of personality on the ticket that grabs the new voters Trump got, and they can't grab the voters they lost? They are done.
I left the party and I doubt I'll ever go back. I won't be a Democrat, but I tell you what (and this is nuts coming from a guy who has never voted for a Democratic presidential candidate) - I watched both conventions in their entirety and I identified with the DNC's message MUCH more more than than the RNC's shit-show. Not everything of course, but a lot of it. That has never happened before. As angry as I seem in this thread LOL, angry and screaming at the world speeches just don't resonate with me.
The crazy thing is, Trump isn't even a true conservative, and privately I guarantee you he disagrees with most of the right's social policies (gay rights, abortion, transgender restrooms, etc), but the RNC's platform was the most conservative I've ever seen...and some of it was just not for me either. Conversion therapy for gays and lesbians? Really? So you have a not-so-conservative maniac/demagogue on the top of the ticket, running an ultra-conservative platform with an ultra-conservative as his running mate. Fascinating.