Ever tried to breed a wolf and a lion? A dog and a cat?
Whereas you have tried breeding a dog and a man, have you...?

I play a khajiit as all my 1st characters (in TES games), partly as others have said, because it makes a change from being human (I get that every day). But also partly because their buffs/strengths are in tune with my gameplay style.
I like the unique animations in Skyrim too - it's kind of useful to have the laid-back ears as an indication that there's enemies nearby - like she senses before I see.