I find it is more on how you live your life. I have a friend who is a muslim, he is one of the most "christian" people I know,in that he would help anybody. He has talked about the Prophet Muhammad,sal~Allahu~alaihi~wa~sallam, But apart from giving me a copy of the Holy Qur'an has made no atempt to convert me.
I am honoured to have such a man as my friend.
As to Harry Potter the books are good reading but of course when a film is made the real cash comes from the spin offs so now children are told that they must have the latest toys that in 6 months time will be consigned to the rubbish bin.
Toy companies will find that some toys will become scarse[the lego hogwarts castle is in very short supply] so if you have one sell it on ebay and make a fortune, if you are lucky you can sell the same one several times.
christmas- humbug
dave