That was why I defected to support Gary Johnson when Clinton got the nomination--it was less about economics than the fact that he was running on an anti-interventionist position, to the point of not even knowing what Aleppo is LOL. I'm willing to vote for democrats I dislike as the lesser of two evils, but I'll never support the more hawkish wing of the dem party. I was reluctant to support Kerry because I thought his sudden opposition (and it really wasn't even a true opposition, just him saying he would've gone to Iraq with more allies than W did) seemed like an attempt to grab some of Dean's old supporters. It also didn't really do him any favors, since I think a lot of independents and even some moderates figured why rock the boat and change administrations if Kerry wasn't really proposing a course of action much different from Bush's. It's all fine and well to run on a "anybody but the other guy" platform, but the eventual nominee needs to also say why they're a better option rather than just mirroring them on major policy. If Biden is nominated, I fear that will happen again.
Those are my thoughts regarding Biden. Of course the polling is good now, but what about next year when he's on full display? (Really the upset in the polls was overstated, it was more the media class talking about Hillary as inevitable that caused everything to be blindsided and doing things like looking at them selectively, like for instance, looking at gains in Georgia and ignoring problems in places like Wisconsin. Technically, the polls were right overall, because they tended to not have her winning by a huge margin, but squeaking by. It's just that in this country we have the hallowed norm of the electoral college, so it doesn't matter that she won the popular vote. 538 gave Trump a 1 in 3 chance of winning after that Comey fuckery [still don't care that Trump fired him] which was a very significant narrowing of the race. If there was a 1 in 3 chance that I'd be successful at something, I'd go for it. )
I never seriously considered Trump because I had a feeling that what would happen is exactly what is happening now, that he'd be too obsessed with twitter to reign in the hawkish, but grifters like Bolton who were waiting to take a job in his administration so they could push their neocon agenda. Obviously there were other reasons to oppose Trump but that was a big one for me, and this might determine whether I support the eventual DNC pick or defect for third party again.
I voted for Clinton because I was halfway checked out of the damn thing anyway. I would say that in my gut, I always thought Trump would win, even if I sometimes went with the prevailing narrative. Trump really is a clown who cares too much about himself to pose any kind of benefit for folks. I wouldn't call him worst President ever because he has less blood on his hands, but he's acted in line with my expectations that he couldn't be trusted to drain the swamp. But I had a hard time thinking of any positive to voting for Clinton other then the fact that she probably wouldn't renege on the Iran deal, despite her hawkishness; it was really kind of a Stannis situation, lol.
The big surprise for me in 2016 was really how far Bernie got. I'm rather encouraged by that. I expected him to end up like Howard Dean, but he did way better, even in places that are supposed to be more conservative. Lends some credence to that book "What's the matter with Kansas?".