The fundamentalist stance on Schiavo's case (to continue care at all costs) was always interesting/puzzling to me. On some level I would assume that people with a strong belief in the afterlife would be more open to letting people pass from this mortal earth than those of us who don't have strong beliefs about an afterlife... but clearly that wasn't the case :P
Growing up in the church, it eventually became pretty clear that nobody actually believed in heaven. Almost nobody’s actions were congruent with what you would do if you actually believed in heaven.
The stances on death, the reactions when people died… it all matched what you’d do if you believed death was the end and none of it matched what you’d do if you believed people went on to eternal paradise.
These are easily explained, and not evidence of your claim that Christians don't actually believe in heaven.
I assume that by "stances on death" you mean that Christians generally believe that it is immoral to allow people to die. That is because we believe that the life of humans has a fundamental moral worth, such that it is wrong to kill them no matter the circumstances. Many Christians would agree that the patient of some terminal illness would be better off dead, but that doesn't give us the right to do the deed. We aren't consequentialists, we are deontologists. If something (i.e. killing people) is wrong, then it is wrong no matter if it leads to a better outcome.
As far as "reactions when people died", it should be obvious but it sucks to lose your loved ones no matter what. Even if you felt completely certain that someone's soul was in heaven (and few would claim to be that certain, more on that in a bit), it's still very painful to have to be separated from them. It's comforting to believe that someone is (or will be) in heaven, but that comfort does not just erase the pain that you have to endure in the here and now. People aren't Vulcans, who can shrug things off through logical reasoning. They have feelings that are sometimes irrational but no less real because of it.
Furthermore, nobody can have complete certainty of the future. If I were to lose my job, I would be upset and worried because of how that might impact my family. By your logic, this would mean that I don't actually believe that I'll be able to find a new job. But no, it just means that I know that the future isn't certain. I believe I could find a new job if I lost my current job today. But I'm not certain, and that means I would be upset if I did lose my job. In a similar way, Christians believe in heaven but we can't be certain, so we still fear death sometimes. I mean, Jesus himself was afraid of his impending torture and death at the hands of the Romans! It's just part of being human.
Fundamentalists don't do things for others, they do them for themselves, to make themselves look better, or to be praised. They are superficial and fake. No one will miss them when they are gone.
