Angus Tuck does not enjoy the prospect of living forever. He wishes that he could live and die like all other living creatures.
The reader (and Winnie Foster) learns in chapter twelve that Angus Tuck does not enjoy immortality. In that chapter, Angus invites Winnie out on the pond with him. He uses the time to explain why it is important for Winnie to keep the spring a secret. He also confesses to Winnie that he deeply wishes for the chance to go back to a life in which he can die. He explains to Winnie that part of living is dying. To Angus, without the ability to die, a person can't really claim that he or she is really living. That person is simply existing . . . like rocks on a road.
"If I knowed how to climb back on the wheel, I'd do it in a minute. You can't have living without dying. So you can't call it living, what we got. We just are, we just be, like rocks beside the road."