I guess we'll see how this plays out, but I have a hunch that Dems will ultimately be thankful that Hillary lost. '18 could have been a complete bath in the Senate if Hillary was President, and it's unlikely that Democrats would gain back much in the House or in the states. The only thing - and it's a pretty bad thing - is that they'll lose the Court for many, many years.
But Trump being Prez will likely limit their gains in one of the most favorable Senate election years I've seen, and likely see Dems make gains in the House & throughout the country. Even people who like Trump don't trust one party that much, especially when they're getting a little crazy like this.