Peer pressure has a lot to answer for. As relational beings prone to enjoy the company of others and looking to maintain the status quo in certain characters can easily get sucked up in portraying someone that fits in. The pressure to live up to people’s expectations can be oppressive and leave people cold inside without ever understanding where they can truly be themselves. The cry to break free enables people not to please people but find that place of fully realising who they are called to please.
God was pleased to trust us with his message. We didn't speak to please people, but to please God who knows our motives. (1 Thessalonians 2:4)