Attitude.
Just because you can do it doesn’t mean that you should. Paul argues that eating meat offered to idols means nothing. Idols are not gods. There is only one God, but not everyone sees it this way. Paul argues that doing what we want to do without thinking of possible consequences is unloving. His argument centers around love. If we think of others through the lens of love rather than the lens of freedom, we will avoid those things that lead others to deny the faith. The freedom to do something is not always the loving thing to do. We live our lives with less focus on self and greater focus on others. We are especially mindful of how our actions affect our brothers and sisters. The attitude of love thinks about others rather than seeking ways to please self.