Me personally, I'm not opposed to REGs (I ran a whole pack of Lucky Lime) but I understand why, the FEMs are more popular.
With preservation genetics, more experienced growers, or those with more space available (likely a mutual situation) regulars are even more enticing.
Tricky spot Useful.
I'd have to say, since the FEM seed supply is so bountiful, the REGs may be getting pushed aside by a high percentage of the casual cultivator.
Edit: That Lucky Lime is no joke. I ended up in a situation where the only "cut" I had from the one that really kicked ass, came from outdoors, and had to be euthanized due to space consideration along with an aphid infection.
I still miss her.