Keeper of the Superfluous Es!

I don't really have my own theory on this, but I find it amusing how many people can see Snape crying. I think I don't envision him that way because when I think of younger!Snape, I tend to liken him slightly to one of my friends. This friend isn't shy or anything, but he will *always* keep any problems to himself. After being best friends for nine years, I have seen him cry a grand total of two times: once when he broke a bone in second grade, and once later on because of his family. Snape seems like a very private person who wouldn't want anyone else to see his pain.
Is this making sense to anyone, or am I just seeing him completely differently? ^_^