Well, yes. According to a quick search something like 108 billion people have ever lived (compared to 7 billion who walk the Earth today). That seems like a population that would be pretty hard to keep going without having a few extra Earths.
Besides that, it is immaterial. We are all going to die someday and there is nothing we can do about it. The people seeing cryogenics are largely snake-oil salesmen. I don't believe anybody will ever find immortality (at least not in this life).
Besides that, it is immaterial. We are all going to die someday and there is nothing we can do about it. The people seeing cryogenics are largely snake-oil salesmen. I don't believe anybody will ever find immortality (at least not in this life).