I grew up in the US and have lived here all my life, and I didn't have an imaginary friend and can't remember any other kids mentioning one. Now I have an only

I grew up in the US and have lived here all my life, and I didn't have an imaginary friend and can't remember any other kids mentioning one. Now I have an only child, which seems like a likely candidate for such a thing, but he's never done it and I've never heard about any of his friends doing it either. So shrug it's one of those things I've always heard is "common and normal" but never actually witnessed.