If Jesus died to forgive us, then why is there a Hell?

Not at all. "The meek shall inherit the earth . . . " - Psalm 37:11. I am hoping to be among them.

If heaven was so great, why would so many angels forsake their relationship with God for a few years on earth?

I say that to anyone thinking they may be among those who go to heaven. Rarely have they thought it through. - Revelation 5:10

I'd say they were outsmarted.

So what do you make of the 1000 year reign, or is that part of your beliefs? If so, what purpose does it serve?

Do not be amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice 29 and come out, those who did good things to a resurrection of life, and those who practiced vile things to a resurrection of judgment. (John 5:28,29)

Now as soon as the 1,000 years have ended, Satan will be released from his prison, 8 and he will go out to mislead those nations in the four corners of the earth, Gog and Ma′gog, to gather them together for the war. The number of these is as the sand of the sea. 9 And they advanced over the whole earth and encircled the camp of the holy ones and the beloved city. But fire came down out of heaven and consumed them. (Revelation 20:7-9)

Quote:
"Do not be amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice 29 and come out, those who did good things to a resurrection of life, and those who practiced vile things to a resurrection of judgment. (John 5:28,29)"

Unrighteous ones, particularly, should require time to learn and adjust.

Additionally, there will be considerable environmental cleanup.

Then, no doubt, a period of time for true peace and security.
And then some time for a final test.

Quote:
Now as soon as the 1,000 years have ended, Satan will be released from his prison, 8 and he will go out to mislead those nations in the four corners of the earth, Gog and Ma′gog, to gather them together for the war. The number of these is as the sand of the sea. 9 And they advanced over the whole earth and encircled the camp of the holy ones and the beloved city. But fire came down out of heaven and consumed them. (Revelation 20:7-9)

Well, yeah.
Apparently, humans are easily outsmarted.
Haven't you noticed?

Also, that is why God tells us to be vigilant and sober minded. Satan is that good at deceiving. Good enough that at the end of his season, all will need to be judged.]

. . . You may have missed the time context of the period i was speaking about. I was talking about the time immediately AFTER the 1000 years during which Satan was imprisioned and was NOT free to deceive. The people on earth had that many years to learn directly from Christ what was up. What I wanted to know was why after all that time with Christ and NO Satan did many join Satan as soon as he was released. Yes, he is good at deceiving but there has to be some explaination why he was able to so easily deceive people after they had that long to learn the truth.

For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.