Purpose of shape is simply tracking of your social status, and if you live in the society where certain things are taboo, you inevitably will feel shame for breaking those taboos not because you do something wrong but because this is damaging your social status.

So if someone found out my interests I would be quite ashamed but if nobody knows there are no problems.

I do not see any reason to feel any guilt unless you hurt someone.
even if you are a bad person there no reason to feel guilty unless you harm someone by action or inaction.

Considering myself I simply reject social norms and rules and see those who support them as my enemies or inferior people.
My only rule is not to do permanent damage to anyone. Anyone who thinks different is not worth my sympathy and I do not care what happens to them.