This uncertainty about death presents a serious problem though. In order to live my life in a manner I feel is intelligent, I'd really prefer a clear answer here. If I know that option 1 is correct, I'm going to live my life very differently than if I know option 2 is correct. I can't do both at the same time because they seem incompatible. I'd set different goals on one side vs. the other.
Living in a state of uncertainty doesn't quite work either. Uncertainty in this particular area gives me a poor basis for making intelligent lifelong decisions. It's fine that I'm uncertain about what the weather will be like next week. But uncertainty about death itself makes long-term planning nearly impossible unless I lower my consciousness, watch a lot of TV, and subscribe to the social context without thinking for myself. Think about it -- if you knew with absolute and total certainty what will happen to you after death, would it change how you're living your life today?
Remaining uncertain in this area is a suboptimal choice -- it's better to decide one way or the other and be wrong than it is to remain uncertain and do nothing. Too much doubt in this area will produce the worst outcome of all. In order to intelligently decide how to live, we need to have a reasonable understanding of where we're headed. We can still live OK without this certainty, but we couldn't really say that we're living intelligently, since we'd have no basis for knowing if our decisions would ultimately turn out to be smart or foolish in the long run.