Having brewed award-winning IPAs I would take issue with that statement but luckily there is much more to the craft beer world than IPAs. You mentioned you like sours but hops are often used to interesting effect in sours as well. Sour beer yeasts and bacteria actually interact with hop oils to create new flavors. It's fascinating stuff although still poorly understood. As an example this sour beer wiki has a fairly detailed article on using hops in sour beers. http://www.milkthefunk.com/wiki/Hops