Judge Dredd: Parodied when Dredd is called in to talk down an obese man who threatens to jump off a roof.Fantastic Four: Reed talks down a lonely, suicidal man with terminal cancer by promising that he'll be there to save him from Dying Alone.He's self-aware (and self-loathing) enough to realize that he can't truly help her, but the people at the emergency room can.
Wade tells her that he doesn't think she's crazy, and that she just needs some help. He ends it by taking her to the emergency room, having already texted them that she would be walking in for help.
As each member of the group realizes they have something to live for, it causes Satou to realize how empty and sad his own life is, and by the end the now-hopeful members of the pact are having to physically stop him from jumping. In a particularly dark twist, Satou is not genuinely suicidal and just wound up roped into the pact with everyone else. Happens when Misaki (with others help) convinces an entire suicide club (which Satou joined) to abort their plans.The climax of Secret of the Princess has Fujiwara talking down a suicidal Miu, who has fallen for her but doesn't believe she could ever reciprocate and is currently planning on jumping off the school's roof, by making Miu tell her that she loves her, then telling Miu that she loves her back, which results in them starting a proper romantic relationship.In Natsuneko's one-shot manga Rooftop Miracle, two girls independently try to commit a suicide by jumping off a tall building, for the exact same reason no less as both had been swindled by the same person, but end up talking each other out of it.After that, he and Tsuna become good friends and he joins Tsuna's mafia family. He ended up falling due to bad construction of a gate but Tsuna saves him. With an audience of students trying to cajole him out of it, the only voice he listened to was Tsuna's. So he moseyed on over to the edge of the school rooftop and prepared to jump, and he was dead serious about it. This was due to some bad advice that he broke his arm over, and he thought that his career as a baseball player was over. In Reborn! (2004) in the early chapters of the manga Yamamoto almost commits suicide.Maybe the Talker wants to spare the Suicidal the embarrassment of having the police come over to do it, or else wants the Suicidal to get help, but wants to minimize the chances of having them being taken off to a mental hospital (especially if the Talker fears that calling in the authorities might be the last straw that pushes the Suicidal into going through with it). Also, having only one person or a small group of people (especially if they are close to the person they are doing this to) talk down one person who is about to kill themselves is better for building up emotional tension and drama than having a large emergency team do this. Even if your life is saved by your being forcefully stopped from killing yourself when you're suicidal, it's nothing like having someone telling you to not do it because they actually care whether you live or die. The most obvious reason for doing this is because of this trope's similar effect to a Care-Bear Stare. There are multiple reasons why someone might decide to take this approach instead of immediately calling for emergency help.