[Nyororin]

I guess it all depends on what your "morals" are.

Premarital sex is pretty much a given... But drugs and crime? I think you`d be pressed to find a country with less of both than Japan.

I`m going to guess it is related to the human body. Nudity and sex is not looked upon as such a taboo as it is in some other countries, and the general attitude toward life tends to be a bit different than the common western ideal.

A simple comparison, in my opinion, is this;
In the US, sex and nudity seem to be the ultimate evil when it comes to media. There is outrage over anything deemed too sexual, etc... But at the same time, violence is widely accepted.
The opposite is true in Japan. Nudity and sex are natural things, so aren`t treated with shock and disgust. Violence on the other hand is generally looked down upon.

The thing is though, no one is going to force or even really invite you to do anything outside of your comfort zone. And if someone wants to do something of low morality in the US - they`re going to regardless.

I would love to know exactly what these immoral things are that were referenced. Without knowing what sort of morals your mother has, I really can`t comment much more.