Morality comes from a society's views as a whole of right or wrong, which in itself isn't necessarily always right or wrong (for example, slavery in the US was morally okay for a time being, but not in today's US). So what "makes" morality right has to do with the people's attitudes at the time those views are held.

Wow, this could evolve into a huge dissertation. Let's change gears...

What kind of non-traditional topping would you want to see on a pizza? Pineapples and buffalo chicken were weird when they first came out on pizzas, but people got used to them. So what's the next new non-traditional topping that you would like to try, and possibly patent the idea and make a lot of money on?