I only wear blk thong at work.
Once I get home, I take off undergarments.
I haven't worn panties since I was 12. My mom told me I didn't need to wear them when I wore yoga pants which was pretty much every day at the time in winter. When Spring came and the weather got better, I was so used to not wearing panties that I didn't want to put them back on with shorts so I didn't.
This just happened to be around the time that I started fooling around with friends which created the association of no panties=fun times.
Haven't worn panties since.