And if you think it's ok to just leave when you want and go your merry way and not expect any reprisals, take a look at an S77 form:
https://drive.google.com/file/d/0BwqmWMK7dwtlX2JwcV8tbEtBX3M/view
This is the form the elders fill in about you if you get disfellowshipped or disassociate... disassociated ones are treated exactly the same as disfellowshipped ones. Joining another religion, accepting a blood transfusion or joining the army are all they need you to do in order to declared you disassociated. It's check mate my friend.