Very interesting thoughts. I believe not everyone who struggle with this problem are "agreeable" though, some people just never had the chance to be themselves while young, so they pretty much useless in that matter as adults, so they will go "wherever the wind takes them", not necessarily to make people happy, just to no have to make decisions at all. It's a very deep topic that involves personal growth, self esteem and the circumstances in which you were raised. Not everyone had the chance to worry about purpose and give it some thought.

I enjoyed this post. Thank you @chbartist