Unintended consequences.
Do-gooders don’t realize that they are actually going to be helping a number of these people to commit suicide. Accidental suicide, but suicide nonetheless.
I have a psycho alcoholic sister-in-law who for a period of time was doing everything in her power to ruin my life. At one point I semi seriously said to my wife that I was considering having a couple of cases of vodka left on her front doorstep so she could drink herself to death. Which would have probably happened.
Fortunately she got divorced and left town, which solved my problem.
Rhetorical question but I understand if you don’t comment further...Why was she more your problem and not your brother’s?