A Question About Smiling...

I have a question? Does it seem to you like people tend to keep to themselves? I've been realizing that my simple smiles, waves, or eye contacts seem rare compared to those who walk by with eyes down or minding their own business. I mean sure, there are days when I'd rather keep to myself or be invisible (in fact I was quite surprised when about three people came over to me while I was in the library in a span of 2 days....one man just talked up a storm which was cool, one was an old friend-also very cool, and one was a little girl and her tutor who had no place to sit but next to me and I have to say it was good to see her excited about learning) but not all the time. When walking to class every day, its amazing how many people are caught up in their own world. Granted I am often that way too but I like to smile. Maybe it's like mom said, if you have Jesus in ya, your naturally a happy person. So there's my challenge: spread the joy/love/happiness as those sayings go! After all you never know who you'll meet or what they're going through. There was even a yahoo news article on the affects that smiling has on people...if yahoo is talking about it well then you know what that means.