Robert Downey Jr who has entertained us by portraying Iron Man in the Marvel Series has finally decided not to be a part of it anymore.
Robert Downey Jr Bids Adieu To The Marvel Series
The Avengers: End Game had put an end to Downey’s role as Tony Stark. But there are speculations that he might return back as Iron Man in the animated What If? series. Moreover there were some footage circulating online where Downey was seen shooting for Black Widow.

But later on it was found that these were some raw footage from his previous movie Iron Man 2. Downey when asked about making a comeback as Iron Man he said that ‘he is all done’ with Marvel Series. And Avengers:Endgame would be the last movie where he portrays the role of Iron Man.
In Endgame his character came to an end when he had to use the Infinity Stone to defeat Thanos and thus put an end to his life. That is where we lost Downey as the epic Superhero Iron Man.
The Reason
Well during a podcast i.e SmartLess Podcast Downey stated that his association with the Marvel series has been a long one. And he absolutely loved playing the character on Tony Stark.

But as they say that everything comes to an end. And that is what Downey said. His has lived his character for years and now it is time for him to bid adieu to this popular character.
But his announcement his certainly broken the hearts of every Marvel fan. Because Downey has lived his character Tony Start as its best. Therefore his exit from the series also brings an end to the speculation that the character of Iron Man will ever be revived.