There are times when RT H fare from opposite direction is cheaper W fare, in that case and I know I will be there multiple times I will do that.
Ex. 2 years ago RT H fare from SIN-NRT-ORD was only $1600, ORD-NRT-SIN on W fare was about the same. I know I will be in SIN 3 times in 4 months so I bought 2 RT from SIN and 1 from ORD and nested them together.