Nature's purse

One thing I will never understand is the use of nature's purse.  I guess I have never been that desperate but still, really?  We have one guy that now has to wear adult diapers because of his constant use and it isn't for anything that seems worthwhile.  This is a guy that they will do a strip search on and then take to the shower and he comes out with shampoo and soap he didn't have before (or so it seemed).  He was taken on transport one day (which also has a strip search performed before on) and ended up with six legal envelopes that he didn't have before.  He has had ajax bottles and all sorts of stuff up there.  What in the world makes someone decide to stick these things up their rectum?  And to do it often enough that you loose the ability to use it what it was meant for?  No thank you!