What do you think happens when you die?

A lot of people will say it's like before being born or that we go upstairs to heaven with the Gods.
But I think we are just part of cells. The earth is probably just a tiny molecule or perhaps similar to an electron. It's going around the Nucleus ( Star - "the Sun"). We could be tiny creatures living in one cell. Smaller than bed bungs (a typo here but it sounds funny ) to put it in some sort of perspective albeit an obscure one.
Sometimes I can't wait to die just to see what happens. Will we just cease to exist? It seems like such a waste. Will I never see people who have died again? Because that's depressing.
I don't see why people are so quick to say there is nothing after death. We have no proof of anything either way. I remember being very small and thinking I used to see angles in the corner of my eye and I'd look in disbelief really quick but nothing. I still happens from time to time but rare.
I'm just not sure I see the point in life if it comes to an end with everything becoming nothing. But then again why should there be a point.
We'll probably never understand:(
It can just be as annoying to think where did it all begin. What was before the big bang and how did these gases come about. Is there anything out of this universe I wonder. I don't think we will truly ever understand everything such as time but I just hope we do. I'd love to have all the answers.
What do other people think?