It's definitely an ease-of-use thing for me, though I love rope. There is something so intimate about the time it takes to bind (and unbind) someone properly. If I know we will be moving positions in a shorter timeframe, however, I am more likely to use cuffs.

Clothespins are great! They have a classic feel to them. I must say, I had a hard time finding wooden ones as opposed to plastic, so I now have a stock of both but gravitate to the former.