@hightor,
Well Hightor....
Hopefully you can respect the women that you are with whoever they are. If that means you only have sex after marriage while fully clothed in missionary position before 8:30pm on alternate weekends....so be it.
Some of is enjoy a wider range of sexual activities than you do. I do believe that whatever you do, you should care about the feelings of the other people involved.
By the way, I have worn a thong (fairly recently). My girlfriend requested ot as part of sexual play. The "ass floss" felt a little ridiculous, and not exactly comfortable. My girlfriend showed her appreciation in the most wonderful of ways.