Yep. People don't often sit down and weigh just how long eternity is. It NEVER ends. It's why I think people need to take living more seriously, because the Bible teaches us that our actions in this life have eternal ramifications.
It's strange from our earthly, specifically Western, perspective. I'm definitely not a theologian but there are a lot of youtube videos and books out there that have guided me through my hard questions about Heaven, hell, and God's justice against sin and His mercy.
My top three suggestions for YT channels are Redeemed Zoomer, BibleThinker, and Wes Huff.
BibleThinker has a whole hour long study on hell.