The Evil of Calvinism: Predestination

I'm not going to pretend that the doctrine of predestination is the only evil thing about Calvinism, but I'm willing to entertain the notion that it is the most evil.

Let's look at it honestly, shall we?

God: Omnipotent, omniscient. Knows before the beginning of the world everything that will happen up to the very end. Creates a system whereby people will be sinful, and may or may not be saved, depending on His divine whim. Knows who will be saved and who will not, and that the vast majority of humanity will be tormented for eternity. Creates people anyway! Offers salvation to a select few (the elect) and lets the rest burn for the heinous crime of being exactly as they were created.

Can we please talk about this? This is NOT loving. This is NOT grace. This is evil, plain and simple. This is a sick, psychopathic God that we are describing here. One who ENJOYS watching its creation suffer. The Calvinist god had every choice in the world and could have set up a different system, whereby people would not have to suffer for all eternity, BUT HE DIDN'T.

I have a question for the Calvinists out there:
Even if you can't help but believe that the Calvinist god exists, how can you bring yourself to worship him? How does this not make you sick? I mean even if you could show me absolute proof that such a deity existed, I could NEVER worship it. How can you live with yourselves, knowing that you've dedicated your hearts and souls to the above-described pure, unadulterated evil?

This shit is FUCKED UP.