I find that when people just have a quick go, they like the ease of rear wheel control, its pretty much always the first impression that people go with. Thats what happened with me anyway, but I soon found that the rear wheel control comprimised the bikes other uses. I dont have the best balence in the world, so I found that on a high bb bike, my center of gravity was noticably higher and I could randomly fall off for no reason. Theres soooooooo much more to how good a bike is than rear wheel control, sure high bb bikes are good at some stuff (hooks backwheel control and aparently gaps to front are nicer) but since when has a normal frame been hard on the rear wheel? I think sidehops, normal gaps, staying on the bike once landing moves, bunnyhops, manuals, and general balence are all better on low bb bikes I dont want to sound bigheaded or anything, but it nearly always seems to be the newer, learner rider who like high bb frames (just because of the rear wheel control I think), I can count the number of top riders who use bbs over 30mm on one hand.