I'm sorry I don't really have any personal experience with this, as depression always accompanies my suicidal thoughts.

I don't think what you are experiencing is necessarily abnormal, but I am by no means an expert. I think many of us go through phases of curiousity or fixation on death or suicide or other morbid things. I think it is a way of trying to "sort out" these things.

If it is causing you significant distress that you are having these thoughts, it certainly wouldn't hurt to find a counselor, pastor, etc. to talk with.