I'm kinda with you on this one MIE. Whenever I see those horses in the field with fly sheets on, they are sweating and not just a little bit but a lot. They also look so uncomfortable. The only thing I put on is a fly mask. Besides I have other things to buy.
But like MIE, says it's free so why not?
All I pay my psychiatrist is the cost of board, and he'll listen to me any day.