1 Corinthians 10:23 All things are lawful for me, but not all things are helpful; all things are lawful for me, but not all things edify.
Even though the law may say that we are allowed to do things, it is not always right that we do so because what we do may still bring offense to others.
Sitting in a room full of vegetarians eating a beef burger may well upset the whole room even though God allows us to each meat.
Being part of a community or society means we must also be thinking about other people and not just ourselves.
God created this world for us to live together in.