This has been my experience - without a google account, none of the apps that require Google Play Services will function correctly or may fail to sync. Play store, play music, hangouts, keep, gmail, calendar, contacts, wallet, drive etc. The phone should function fine otherwise. Some people prefer to use their phone without a google account and are willing to give up the convenience of their services.
Last edited by jherbold; 4th July 2014 at 08:24 PM.