This has been my problem with cats. They are hit or miss. I've grown up with cats and dogs and enjoyed both of their company. I never once had an unfriendly/bad dog. At least half the cats I had were... "distant" to say the least. Didn't really want attention, liked to be off on their own, etc.
Of course, the good ones are so great. A nice kitty is a really great thing and if it weren't such a dice roll, I'd have cats now.