wow, I would totally disagree. Push contacts, cal and email (email arrives on my iphone before it even hits mail) is freakin awesome. Syncing of preferences (keychain etc) as saved my ass a few times. I almost never sync my phone with my mac, and mobileme keeps things perfectly up to date. (I have to agree with tau1z, mobileme was ****e when it was first released, but most of these issues have been ironed out)
will def renew my sub when it expires in sep.