With all the space launches and stuff we send into orbit, does the earth get lighter every time?

No, the amount of combined mass of all the satellites/debris is not near enough to create a gravitational disturbance for Earth's orbit.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.