The reason I don't believe in unlimited Atonement; or that Christ died for every human: is because I don't believe God; as a holy and righteous judge, would engage in "double jeopardy." IF Christ paid for the sins of the entire world throughout history, then punishment of hell for any human would be unjust and immoral. However, we know for a fact human souls go to hell (verses listed below). Therefore, particular (limited) Atonement is moral, just and Scripturally supported with verses I've listed previously.
As for hell, there plenty of verses throughout Scripture stating it's eternal, those there are conscious, and it's a torment. It's intellectually dishonest to say otherwise. Does God send them there? Scripture makes it abundantly clear He does. Does He create people to go to hell? That's something I/we don't know.
Isaiah 66:24 (God speaking about those who rebel against Him)
Jesus spoke more about hell than anyone else in the Bible. Matthew alone recorded that Jesus talked about hell at several significant times, including Matthew 5:21-26, 7:13-14, 8:12, 13:2430, 36-43, 13: 4752, 16:13-20, 18:1-9, 22:1-14, 25:14-30, and 25:31-46.
Mark 9:47-48
Luke 12:5; 12:46; 13:27; 16:23-24 & 26;
Colossians 1:21-22
2 Thessalonians 1:9
2 Peter 2:4, 3:9
Jude 1:7 & 12-13,
Revelation 1:18, 20:14-15, 14:10 -11; 21:8; 20:10
Happy are those whose greatest desire is to do what the Lord requires. Matthew 5:6