It may be a hobby or a business, but if you take the art out of it, it's not fun! I love seeing the quilts come together and lying in bed at night and planning my next quilt in my head. I love thinking about various color venues and quilting designs. I'm interested in learning "shadow trapunto" and "thread painting". Am I an artist? In my head I am....even if others think I am lacking or just spending a lot on a hobby. Going back to school to improve your artistry? By all means, if that's what you want to do. LOL, I admire you for even thinking about going back to school after retirement! Just getting back into the study mode will probably be challenging, but you go for it, girl!!