Facebook can be quite silly but it can also be a great means to keep in touch. ;)
Normal (worldly) people won't unfriend you over such silliness. You could change your religion to Islam and I doubt they would unfriend you.
Jobie nitwits are the worst friends in the world and the sooner people cut ties with them and get real ones, the better. Frankly, the ones that still clung onto me and whined incessantly about 'the truth' I cut off. It's only a matter of time when they get all self-righteous and hurt you.