love without the expectation of a response.

I do it because I like to, the act or gesture is enough.
Fear of rejection or appearing foolish is why most people don't. Most of these people think love is pain, that is only true if you expect a response and don't get one. If not it doesn't matter, it feels good no matter what.

When I started expressing love for no reason (other than I wanted to) I noticed that it DOES always come back. Try it, it's easy, does NOT hurt, and will improve your life, not only immediately but also when it comes back.

Now it's like a game. I'm having fun while improving the esteem of others. I feel like I'm living my calling.