Linda what a great topic. I was feeling kinda blue because I read that some quilters "only" use LQS fabrics or "only" use expensive threads. I'm unemployed so I use what I can afford. Call me a cheap date, but my quilts turn out just fine and my machine sews best with good ol' Coates & Clark thread.
I really don't think there are any "only"s or "must do"s--just enjoy what you do and do it with love.