I'm very liberal but I came to that conclusion based on a lot of economics study. And am liberal only because demand side economics makes much more sense than supply side to me.
You must have talked to a lot of weird Bernie supporters because almost all of the ones I've spoken with were incredibly articulate and rational about their views.
I've actually found conservative voters to be incredibly ignorant with arguments based on on "muh freedoms" or "muh jobs" or "muh terrorism".
Ask them why they like Trump they can't tell you anything reasonable.