Kids are being taught that being gay is wrong. Which leads to suicides and there are some religions that don't believe in medical treatment. http://www.religioustolerance.org/medical8.htm
And do you think their parents are religious? Some people hate gays just because, religious or not.
If it wasn't religion then people would find another reason to hate each other and make each other miserable. At the basis of religion is humanity. So if religion is doing any harm, then it's humanity harming itself.