My 2 cents...
If you think your parents will give you a damn hard time if you flat out refuse to do that, then you should just do it. You're their child, you should obey.
If you think your parents can be reasoned with... at least one of them... then you may do well to talk to them about what you really (don't) believe in.
They are your parents, you should know them... we don't know them!
People around here will advise you based on stories they hear from other people... it's not very nice to be thrown out from your home, by your own parents and that sort of thing does happen... but parents, down deep, only want what they think is best for their children. (very careful word choice, on this last sentence... read it twice!
)
You can just tell them that you don't believe, but you'll go on with the confirmation, if that is their wish... it will make no sense whatsoever, I know, but it might be a nice middle ground for them to get acquainted with your position and, eventually, just allow you to chose if you do indeed go through with the actual ceremony or not.
A good strategy not to tell them but provide hints is to keep a "god is not great" book lying around, next to something like "the god delusion" or "the end of faith"...
Do what you feel is right and keeps the family together.
If you think your parents will give you a damn hard time if you flat out refuse to do that, then you should just do it. You're their child, you should obey.
If you think your parents can be reasoned with... at least one of them... then you may do well to talk to them about what you really (don't) believe in.
They are your parents, you should know them... we don't know them!
People around here will advise you based on stories they hear from other people... it's not very nice to be thrown out from your home, by your own parents and that sort of thing does happen... but parents, down deep, only want what they think is best for their children. (very careful word choice, on this last sentence... read it twice!

You can just tell them that you don't believe, but you'll go on with the confirmation, if that is their wish... it will make no sense whatsoever, I know, but it might be a nice middle ground for them to get acquainted with your position and, eventually, just allow you to chose if you do indeed go through with the actual ceremony or not.
A good strategy not to tell them but provide hints is to keep a "god is not great" book lying around, next to something like "the god delusion" or "the end of faith"...
Do what you feel is right and keeps the family together.