When I was in high school one of the students committed suicide. There was a lot of discussion and outreach at the school at the time. One of the things they talked about was that once one student commits suicide it greatly increases the chances that others will follow.
My mother is also a social worker at the VA Hospital, and she's had some of her patients opt out so to speak. It does appear to have a very strong pull on other people who are suicidal to choose that path.
So if anyone reading this is having those thoughts, please, please talk to someone professionally. Call the suicide hotline in your area. There are very real things that can be done to help you through this.