I wouldn't say that hybrids are unattractive, some of them are spectacular and I grow a few myself, and make a few myself. I also grow species I don't think are terribly attractive (like the ones Gus cited) because they are species and deserve to be grown. It's all about balance.
Hybrids are a great way of introducing people who would not otherwise grow Nepenthes, and certainly an easy way for kids to be introduced to them, which is evident by the number of young'uns on this and other fora. They have their place, but I'm just saying even "boring" species like hirsuta need conservation.
As for hurrelliana, the debate about its origins is something I'll leave to Charles Clarke who I know has a view on that one. If you've ever seen it in the flesh, it's the hairiest Nepenthes by a mile, and is as unique as any other species.