I like Bernie. He's a difficult person not to like. However, he would not be able to deliver anything close to what he's promising out there on the campaign trail (free college, single payer healthcare, etc.). And while no president ever delivers on everything, he has the real possibility of being an enormous disappointment, which could make him a one-term president. As important as every election is, 2020 is the next census, and the next redistricting, and we cannot afford to have the GOP sweep state legislatures again like they did in 2010.
Of course, there are countless possibilities and outcomes, but the above concerns me.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson