I don’t understand why God doesn’t just do away with Satan. He could, right?
Satan's day is coming.
Revelation 20:7-10 And when the thousand years are ended, Satan will be released from his prison and will come out to deceive the nations that are at the four corners of the earth, Gog and Magog, to gather them for battle; their number is like the sand of the sea. And they marched up over the broad plain of the earth and surrounded the camp of the saints and the beloved city, but fire came down from heaven and consumed them, and the devil who had deceived them was thrown into the lake of fire and sulfur where the beast and the false prophet were, and they will be tormented day and night forever and ever.
I cannot wait for the end of all this evil. I know it's going to be rough on many, but that cannot be helped. It's going to happen anyways. But the sooner it's over, the better, IMO.
Man has free will. That is part of the plan. If there was no choice but good then there is no free will