Who is 'we,' and what do you do with the 'them' who come up with other 'experience' to back up their idea about what's moral and what's not?
'We', as in our society. Don't be obtuse.
What do we do with people who come up with opposing moral views? In our society, we let them make their case. If the morality they propose works better for our society than what is currently practiced, they will be able to make their case and persuade us to change our ways.