Swimwear is slightly different - I wear briefs for lap swimming each morning. I have done it in thongs several times, usually while travelling for work. Beach wear and in my backyard pool is thongs every time.
I got my first thong at 17yo, and I am mid 50's now. I am certain it's been a primary motivator to stay in shape and well groomed (totally shaved now for at least 30 years).
Can't ever see any of that changing
