Would you say he is "weird" for not having one? It's like saying someone is weird for not liking sandwiches. It's just a preference. I have a facebook account but have not logged into it in years. I can't say I feel like I'm missing anything.

I mean weird to be synonymous with atypical. If you don't like sandwiches, that is probably atypical. It isn't a value judgement.

Who doesn't like sandwiches?? I would say that's pretty weird too!

I have a friend who just doesn't "get" why people like sandwiches. So they do exist.