From The Wisdom of The Lubavitcher Rebbe

Everything about the Rebbe was pure kindness. Even his idea of “hell” was as kind and generous as could be:

People have a misconception of Hell. Let me tell you what Hell really is. Hell is a spiritual place where everything that exists in our world exists, but in an infinite way. So, whatever you chased after in this world, there you do it ad infinitum.

And for a lot of people, that’s really hell.