Not all of us CAN vote in the R/D primaries. At least in my area, they are closed primaries. To participate, you must be registered as a R or D. I am not, and therefore not allowed to participate. If I were allowed to, I would have voted against either of the candidates they chose. In addition, primaries are generally not binding and the party elite could chose to run anyone they wish. That would likely cause a backlash, but it's not impossible.
I did vote in the main election. I did not vote for either R or D for President. It is my opinion that both of them would be dangerous for the nation in various ways. I also don't believe in the "wasted vote" nonsense. My votes reflected my beliefs as closely as I could make them. I suspect the only person I could vote for I 100% agree with would be myself, and perhaps not even then.
With Congress, the President, and possibly soon, SCOTUS being Republican controlled, I'm not feeling optimistic right now. I wouldn't with Democrats in the same position either. The whole point is supposed to be to provide balance, it's pretty tough to balance anything with only one side.