i was about 12 when i was playing with other kids and was "kidnapped" by boys. all in the game. completely without brutal or criminal energies.
to make it authentic, they tied me to a chair in an old barn. the girls had to free me.
somehow i liked that.
When i was 16, i met my husband and relatively soon "confronted" him with the fact that i wanted to be tied up.
we bought ropes together at the hardware store... he bought a book about bondage and that's how it started. i was lucky that my husband developed a great interest in it himself. soon he gave me a riding crop and a hitachi magic wand. and that's how it went on and on.
when i was 19, we went to our first BDSM event. that was almost 20 years ago. 20 years ago, young people like us didn't go to such events.
and yes... now i'm 38. my inclination used to be "optional". now there's not much of a vanilla part in me. probably none at all.