Dave Lister is the last human being alive. But in the future. It's complicated but true. In the past, he was put in stasis for 3 million years, and when he came out, he was the last human being alive. His only companions were a nutty hologram, a service-mechanoid, a desendant of his pet cat that evolved into a human-like form, and an insane computer. This would drive anyone bonkers, so to pass the time he played miniture golf, toilet roll volleyball, poker, snooker and unicycle polo.
Lister has often commented on the League, saying that it was "brutal."