I don't care for Gamora, like at all. But it is sad how she tried to save everything and yet she died.
Tony: "So, ya know how people have dreams that they have to use the restroom?"
Pepper: "Right, and then you wake up and you actually really do need to."
Pepper: "So? Everyone has that!"
Tony: "Well, I hade a dream that we had a child!"
Tony: "Yes, it was so real!"
Later in the movie when Tony and Peter sneak on the ship, Tony gets a call from his wife, Pepper and she askes him to "Come home right now! Please!"
Well, this is why Tony can not die!....
Pepper is pregnant!
I figured this out myself a while ago BTW.