You have a point there, but still. A lot of people don't appreciate kindness. You can smile,wave,and say hello to a person,and they could totally just ignore you - for whatever reason. I've had it done to me many times,and now when I go by a person, I don't say anything unless we happen to make eye contact or if I know them. Like at work, there are a select few that I initially greet, but that's only because I (kind of) like them. I do agree with you about how a kind gesture can really brighten someone's day. Even if it's just the little things, I appreciate all of it. If I get a compliment, or someone greets me, it does lift me up a little.