Is there anything worse than setting up camp only to have a family of bears attack, dragging off your food and other campers? That (probably!) won't happen if you've packed a Tentsile tent which hangs out of the reach of predators.
Can you imagine sleeping in a portaledge, aka a floating freaking tent? It's beyond scary. Look at it! You have to trust the tree branch, the rope attached to the tree branch, your weight and the material of the tent.