Overthinking about my friend's comment lately

Hi! I really need to get this off my chest

The thing is, I (F,18) don't feel attached to anyone, especially not to my family. Is that okay? I mean, I've always thought it was just how things were, but now I'm not so sure. My parents were always kinda cold and we never show any affection or anything like that in our house. To be honest, I've never been that bothered by it before. It's just how things have always been for me: parents are busy and I'm just on my own, but last week, my friend made a comment about how it's kind of weird, and now I can't stop thinking about it

It's confusing because we're just not the touchy-feely type? And I don't really need that, but my friend's comment really hurt me and I don't even know why...I've never been bothered by this

I guess I'm just looking for some advice or maybe to hear from others who might feel the same way. Is it normal to feel so disconnected from your family and not be bothered by this? Should I be worried? I'm probably more worried about my friend's comment than the fact that my family isn't that close LMAO, but why am I worried if I didn't care before?