Plenty of people trade them. The advantage is the ability to construct a defined risk profile. Say you feel crude oil is too high but don't want to short the futures because of war worries. You could buy puts on the futures or sell a call spread,etc. Make sure you understand the pricing and expiration cycles before you get involved though, as they are not intuitive.
AAA,
Simple question. In regard to the synthetic short you mentioned for crude. How is that different from a outright short in the underlying other than you now have a two leg position ??
What are the benefits over a short future ??
J-Law