I'm not the sort of Science Fiction reader who goes to Cons, belongs to any kind of group, or anything like that.
I'm one of those who read everything growing up, and I still do, for the most part. I started reading Science Fiction at age nine, and it was the classic stuff.
One of my older brothers had a vast collection he left with my parents when he joined the Air Force. I was warned not to touch it, so of course I read every book. Very carefully, starting with Asimov.
It took me a few years.
At some point in my teens, a friend told me, in a very superior way, "It's not called Sci Fi anymore. It's SF!"
My thought was, "I'll call it anything I want."
I still feel that way. Maybe I'm typical, maybe I'm not. I am a stubborn old creature, though. Most often, I go ahead and call it Science Fiction. No confusion there.