Such is the burden of immortality. Only Peter and Claire and anyone else born with their powers will be there at the end of all things. He could be, but that will mean letting go of the life he knows at some point. Right now what they have is what he wants. "I can't imagine having to lose everything like that. Especially since you aren't an overly material man."

He gently kisses the back of Adam's neck. "I can't imagine any good coming from such a thing. I can't imagine why they had to keep it even though they knew what it could do."