If someone cares about you, they’ll be kind to you. There’s a correlation between caring about someone and kindness, and most people would agree with this.
However, this correlation eventually breaks down. There is such a thing as too much kindness. After a certain point, kindness changes from being a signal of caring to signaling that someone is trying to take advantage of you for their own interests.
You should therefore welcome kind people in your life because life is funner and more productive that way. But you need to watch out for people who are too kind. Kindness beyond reason is an attempt to cloak self-interest as mutual interest. And that self-interest will eventually come at your expense.
Also published on Medium.