To answer your most direct question about ED drugs. I just went to my Dr and said,
"Ya know, I don't really have any problems the FIRST time, but on some special occasions I'd like to be able to do it a couple times. Is there any reason I can't get a prescription for those special times?"
Dr. gave me a sample of 5 50mgs, and a scrip for 5 of the 100mg Viagras, told me to cut them in half (they are cheaper at 100mg) and I was on my way. A year later he refilled. I'm almost another year in, and have 1 100mg left... you can tell I don't use them very often