The matter of being lonely...

Which one is more lonely...

being physically remote, far away from civilization ?
standing in a crowd that have no inkling of your existence ?
having your memories erased one by one 'till there's none ?
living a sunday afternoon with no one to talk to ?
sitting in a circle of friends but you wish you're somewhere else ?
having no idea who to call friend ?
waiting and yet the phone did not ring ?
talking to your reflection in the mirror ?
looking and no one found you ?
hoping and it didn't come true ?
loving and no one to love you back ?
which one...