In reality, the modern democrats are pretty much the exact center. Any sensible traditional right leaning policy like free market capitalism, gun ownership, and immigration enforcement is already part of the liberal Democratic platform.
The reason that what I said holds true should be self evident. One of the cornerstone of modern conservativism is small government and reduced government spending. Yet Trump is pretty much doing the exact opposite of this. So to to even begin talking about why conservatism is valid, you have a LONG bridge to cross of somehow proving that Trump objectively the better choice, which at this point would require exceptionally extraordinary evidence.
Another way of testing intelligence is basically to ask the question - what concrete evidence would it take for you to change your mind to the opposite view on a certain subject? For the question of what is better for society, Democrats and their policies vs Republicans and their policies, no conservative can provide a clear answer on what would it take for them to change their mind.