I don't believe in "heaven," but I do believe that after you die, you 'live' as a spirit in another dimension, which is opposite to ours. (Kinda like looking in a mirror)
I believe that when you die, you do see a bright light, but its a portal to the spirit world. There its just like the real world. You re-live your life there, when you die there, you go back to the real world.....for all we know, SDK could be a styx between those 2 worlds, or we could be living in the spirit world.
I also think you see a dark tunnel with a light at the end. You faintly hear the sound of your friends screaming for you not to go into the light. And then the director calls "cut" and you go to your trailer.
Religious beliefs aside, this one of my favorite quotes explains my view on death:
"We don't know what kind of people we truly are until the moment before our deaths. As death comes to embrace you, you will realize what you are. That's what death is, don't you think?"
-Itachi Uchiha
It's my job to help the next generation, and set a good example for them. And for that I'll gladly lay down my life.
Death is Death. Almost like a suprise birthday party. You choose whether you like how your life went, or you don't. Doesn't matter, you can't do it over again.