I don't think there was ever a hatred for Ping -- a hatred would infer that people cared about it. Nobody cared at all... logged in once, and then never went back to that part of iTunes again.
Its entire approach is actually anti-social. It's not web-based, it's locked into iTunes and is meant for customers. Customers are busy buying, they want "Give it to me and let me go enjoy it now." They connect with other people on the Internet, outside of a commercial setting.
Apple's own support forums are more social even though the purpose is to solve customer problems. You don't need iTunes to use them.