Regardless of what you think of Clinton Trump was a far worse alternative on every measure. Trump will be able to dramatically change the supreme court and US federal legislation as well. Complaining about Clinton/Obama doesn't change the simple fact that he is far to the right on her on almost every issue.
>>Sidenote: Trump has already swung moderate, deciding to stick with NATO [2] and keeping most of the ACA after speaking with Obama [3]. Maybe he doesn't stick to those ideals, but its clear Trump the president may not be as bad as Trump the person. I have hope, but I had hope for Sanders as well. (Excitingly enough, the /r/SandersForPresident subreddit was reactived today, with ~210k active subscribers).
Trump CANT keep most of ACA even if he wanted to keep the good parts. The expansion of coverage is paid and supported by the entirety of the law, it doesn't work without all the provisions.