So my sister and aunt are super religious and they have a habit of debating the bible with people any chance they get.

We were recent celebrating my grandpa's birthday and they start up again debating bible passages. Usually i either agree with them or I ignore them but my new years resolution was to be more assertive so when they came to me i gave my thoughts.

Ive been dealing with depression and guilt for a long time. As a kid i was molested by a relative, and growing up i did things that were considered very sinful. 

But ive learned to let that all go by embracing like a moral nihilism. I came to the conclusion that morality is simply a societal set of guidelines to keep the masses in check. It also varies from country to country and culture to culture.

Whats immoral in an islamic country might be celebrated in a scandinavian country and vice versa. The only thing that really matters in consequence, if your actions will give you a negative or positive result.

Theres no point in being guilty or sad due to past actions as it doesnt really matter. And if you can break that tether to morality that binds you to society, you can achieve almost anything.

No i have not actually read nietzsche. I know about the superman concept but i dont think im one. This is just something i came up with on my own and makes me feel a lot better. Nihilism is just a good word for it.

Im not a great philosopher so maybe this sounds stupid, idk. But i basically express these thoughts to them and their main takeaway is that im an athiest who thinks christians are stupid.

I told them thats not what im trying to say but everything falls apart and now ive been partly blamed for ruining grandpas birthday. 

AITA?