I always vote. And you are right. even though it won't matter for the EC, it still matters for the overall popular count. It's also a matter of personal pride and civic duty. The only thing that will stop me from voting for Trump is my own death.

After which I'm afraid that I will probably start voting for random Dem candidates, because we all know how dead people in Blue states vote. So, sorry in advance for how my corpse might vote.