Instant suicide? not really.
Guess you’ve never suffered extreme depression. It can lead to very quick, very bad decisions about life or death. Do you honestly think that people who throw themselves out of windows (as opposed to steathily planning their own demise by hanging or collecting pills) have thought that through? There are as many types of suicides as there are of people. Sad, sad, sad.
Some people have impulsive suicides. Completeed or not.