The DNC is as corrupt as the RNC, the entire establishment is just trying to serve corporate interests. Certain individual candidates are pushing for policy that I agree with. I think very few of them are not in the pockets of corporations. The DNC fucked over Bernie in 2016, for sure, which was really stupid of them, but then again Bernie is only Democrat in name, in reality he's trying to push a separate platform, which is the reason why they fucked him over, because Hilary is 100% establishment and would have upheld the status quo. One thing I'd say for Trump is that, although I don't think his intentions have ever been benevolent (I think it was all an ego thing for him and also perhaps related to business interests), at least he really brought the problems with how rotten our governing body has become straight to its core into focus. So perhaps some good will come of it, if the people can manage to become sufficiently less apathetic. Not sure that will happen but hey, at least I can hope.
I do still prefer the Democratic party to the Republican party (in their current manifestations) because the Democratic platform attempts to deliver improvements to civil rights while the Republican platform is trying to undo civil rights advancements we have fought hard to make. Even though I think for the DNC establishment, a lot of it is probably just to get votes, because their base is interested in maintaining those civil rights advancements and will vote based on that. There are some Democratic politicians that are considered rather fringe that I do believe are truly interested in making things better for the people and removing the corruption, but they're being labeled Socialists for the most part.