Time travel was presented in season 1 of The Flash, with the scarlet sprinter running fast enough to travel to the previous day, however the development of Savitar is what resulted in the show’s darkest and most disastrous timeline.
The time travel adventures in The Flash have created alternate timelines and modifications (big and little) in individuals’s lives and occasions. After running to save his mom, Barry produced Flashpoint with huge changes.
Unaware of how the occasions of Flashpoint in The Flash would reverberate to today, Barry corrected his mistake prior to running back to the time he left, only to realize that his actions had actually produced problems that they impacted the Arrowverse.
In Savitar’s case, he outlined to eliminate Iris West (Candice Patton) in season 3 of The Flash to trigger the real Barry Allen pain and suffering after being declined and unloved for so long.
In a future without Iris, Barry was dejected, sad, and miserable.
The rest of his loved ones weren’t doing much better on this timeline, either. Iris had actually been dead for 7 years; Cisco had actually lost his hands combating Caitlin who had actually ended up being Killer Frost from The Flash, and could no longer utilize her powers as Vibe.
When compared to any other modification or alternate timeline in The Flash program, the future in which Savitar successfully eliminates Iris is heartbreaking and laden with miseries.
Also, having Iris die at the hands of a bad guy developed by Barry wasn’t a great way to go either. The Flash has seen better days and the scarlet speedster will hopefully never ever create another future as bad as this one once again.