I'm like that. When I go to pick up my kid from school, I have to make my way through a crowd of people. It's the same people who have been there for the past six years, and I suppose it might be weird for me to not be in the middle of them, chatting away, and saying hi to everyone. I rarely say hi to anyone because even when I look at them, no one looks at me. Once in a while I have a day where I feel up to actually looking at people, but not often. Then, when I see my son, my face lights up, because he's sweeter than anyone, and I love him so much.
Today I was near my other son's school, which is a middle school (ages 12-14). When I'm around them, I totally tune them out, because I have no clue how to interact with people that age at all. (except my own kid). But today, a girl passed me and said, "Hello, Mrs. ____." It felt weird to be recognized, but I suppose they do recognize me, because most of these kids have seen me around for most of their lives. I think the girl was someone my son went to kindergarten with, but I wasn't sure, so I couldn't say her name.
Oh, but I'm getting off topic. As usual.