Tears streamed down fans' faces when they saw Iron Man dying on screen in front of his wife and the other avengers. He brilliantly killed Thanos and his army but as a result of the snapping of his fingers with the Iron Gauntlet, where he said,"I am Iron Man", he ended up burning himself.
The end was so traumatic for the fans that they have now started a petition on Change.org to bring back Tony Stark's character, Iron man. The Marvel fans don't want to deal with it in any other way, they just want Tony to be back to life as their loved Iron man.
Have a look at what the petition says,"MCU's Tony deserves to come back fully alive. Tony Stark was always ready to risk his life, suffer, and sacrifice himself for anyone, without ever receiving anything in return. Since the beginning, since he was a kid. He can never be happy, and when he finally got what he always wanted, and deserved, his wife, his daughter, his family.. he died. He didn't deserve this and it's not fair, after everything he's been through, and done for everyone, he deserves to live and see his daughter grow up.
He has helped so many people (in the MCU and in our world), he has helped people to live (including me) to overcome their problems, to accept themselves, to face life. He's so important. He saved our lives and it's our turn to save him.
We love him so much. We love him 3000. Without him, now, we are totally lost. For many people, he was their reason to live and hold on in life.”
Crazy, right? Well, that's what fandom is all like.