I approached 2016 entirely differently. I was essentially exhausted and burnt out. I wanted to do the bare minimum and focus on getting into and starting grad school. I'd heard of Bernie before, and I liked what I knew of him, but I thought he would pull out early. The fact that the race was competitive caused me to re-evaluate my understanding of the American electorate and that more of them were on the same page as me then I thought. Even so, I didn't expect him to win, and wasn't particularly bitter when he didn't win. I didn't really follow the primary process closely enough, anyway. I also had reservations about his success in the general election, although I did vote for him regardless.
Clinton ended up wining the nomination as I'd anticipated. Personally, I was not much of a fan for reasons articulated elsewhere, but I refrained from criticizing her. I don't think I was vocal about my opinions of her at all until 2017 at the earliest. Certainly her constantly weighing on this primary has not endeared her to me any further. The fact hat she lost, though... I think that was the last straw for me and the Democratic establishment. What is the point of suppressing my own voice in favor of "electable" candidates who can't get elected? Why should I make things easy for people who take my vote for granted?
My thinking boils down to this: We tried the "electable centrist" route in 2016. I was reluctantly on board for that. I am not willing to try that again. We might as well try something different, and there are lots of reasons why I now think it will actually work.
See, the thing that's become apparent to me since 2016 is that I'm not the only one. I'm not a voice crying out in the wilderness; that's just what people wanted me to think. There are lots of other people who think the way I do. There are lots of other people who are tired of being ignored by the Democratic party. Who are tired of being taken for granted. We're tired of being called "fringe lunatics" for not backing endless unwinnable wars or wanting things that every other developed country has. We're tired of falling in line for arrogant bozos who not only fuck up and give us 4 more years of Bush or President Trump, but have the nerve to blame it on everything else, from internet trolls to people who (*gasp*) wanted a positive vision for the country instead of empty posturing about "experience" and "norms."
I realize I'm not alone, and that's what gives me courage. It isn't just me. It never was. If we work for it, if we make our voices heard, we will beat all of this.