When I was alone at home, I'd always want to sleep nude (never told my parents) or walked around the house nude...so going nude outdoors or in front of others just seemed destined to happen.

I have to say on my 16th birthday, my parents took me to Austria where my Mom and I traveled during the day while my dad was at an insurance conference.  Then at night I would strip and stay naked (we had separate rooms).  The hotel did have a "gym" with a hot tub and sauna but no one visited it while I was there.

Then during the summer, I worked at a bible camp which had a lake.  On the weekends after the campers left, the staff had a tradition of skinny dipping on Friday and Saturday nights (whoever wanted to swim naked could and others were there to cheer us on or watch).  As you can imagine, part of the thrill was that I, a 16 year old, was able to skinny dip with college coeds but for me the bigger thrill was the feeling of swimming naked.  Over the next 2 1/2 months of swimming naked I learned that wearing a bathing suit gets in the way and that I was forever hooked.

I have many more experiences where I've shared this with some family and friends (but that's another post).