There is quite a difference between flying in uncontrolled airspace to a gps letdown with zero ATC or traffic separation and communication and carrying out a published procedure in controlled airspace, where at least all IFR traffic is receiving separation instruction and VFR traffic is receiving at a minimum traffic info and is still subject to clearance.
I was commenting on crabs assertion that this is an unsafe thing to do for the reasons he stated, there are plenty of reasons perhaps that these approaches should not be flown, however the argument about the big sky theory holds no water in my opinion as flying a pubished approach offers you little extra mid air collision protection.
I am pretty much in agreement with Crabs comment here, and those of you who do routinely carry out these type of letdowns are sooner or later going to hit someone or something. I think Crabs comment was alluding to the fact that it is simply a complacent attitude and the belief that there is such a remote chance that someone else is in exactly the same place and time that is so worrying. To claim that a non-published approach offers the same "mid air collision protection" as a published approach is in my view frankly a ridiculous statement.