One use I can think of is killing a child process in such a way that the parent process considers it has successfully returned. For example you have a "curl" c

One use I can think of is killing a child process in such a way that the parent process considers it has successfully returned. For example you have a "curl" command in a script that is waiting for a server that doesn't respond, killing the process with the kill command may cause the script to fail. If you want the script to continue anyway, you can use that trick.