I'm new to HF and hammocking in general, but have sailed a lot and am comfortable with knotting and splicing, so I made myself some whoopies. To me they are a brilliant solution, light, compact, minimalist. I love 'em.
BUT... I'm going to be setting up a couple of hammocks to keep at our family cottage, for use by whatever family member happens to be using the place. For those I've decided to use straps and cinch buckles rather than whoopies, reasoning that the strap/buckle combo would be more intuitive to use, and maybe more forgiving of ham-handedness. The fact that I just picked up 50 yards of 1" camo polyester webbing figures into the decision a bit also...