Our culture defines us. It gives us pre-conceived ideas of how things should be, and how they should not. But culture is not static. Some of what is common today would horrify our great-grandparents. What is acceptable is fluid, and changes over time. We decide what is 'right' largely based on what everyone around us is doing. Just like these parents. No foul then? Or are there true objective standards that we should all live by, irrespective of geography and culture, outside of space and time? I believe that there are. I believe that there are moral absolutes written into the very fabric of the universe.
What about you? Do you define right and wrong by the culture around you? Do you think some things are kind of wrong but it's ok to do them because everyone else is doing it? What if you moved to Cambodia?