> That information is easily available other places

Often ease of access in the moment is all that matters. If there's a gun nearby you might shoot someone or yourself in a heated argument, but are less likely to go and find/buy one to use. Someone who's stopped from attempting a suicide will likely not try again (70%)

A bored/depressed/angry/curious person might try to build a pipe bomb if they can find out how easily, but are less likely to put in effort.