To me, it is one of the saddest changes in my life... When I was young(er?), you could find glory holes in almost every men's room you went into... I loved the ones at gas stations, truck stops, and highway rest areas the most, but found some hot ones in libraries, movie theatres and college bathrooms... I LOVED to suck cock for hours, never even considering having mine sucked... I loved the anonymous sex and the fact it was a public place... also loved the variety of size, shape and taste of the cocks that were pushed through the hole for servicing... DAMN, I miss those days!
Seems the only glory holes I find around are in Adult Bookstores, which are also few and far between. I went to my fist one when I was 18, and had a great time, visited it many times over. I just found a new bookstore and was able to get serviced a bit but not as much as I had hoped for.
Back in the 70's-mid 90's Glory Holes were all over in a variety of places, even unexpected surprises like movie theaters, etc. Guess this is also an outcome of our "society changes" :-( I think that glory holes were/are a great release for needs.