I agree with iiholly, although the concept of 'good and bad' or 'right or wrong' is individual. Religious people choose to believe that their definition of good and bad is the word of their 'God', and those without religion just understand how things 'should' be. Society helps us form these ideas...

Religious or not, treating people how you expect them to treat you seems a decent place to start.

I don't think 'all homosexuals are bad' can be accepted as a standard rule for all - some narrow minded bigots believe that, but fortunately the masses are far more accepting. I reckon there are very few things that can be considered 'universal truths'...