Flowings of Your Everlasting Taffyman

So I was just looking at my art work and I think I have a real problem with A) realism B) depth in my work. I think the "depth" if there is any comes from foreground and background only... nothing that sort of ranges...
I'm trying to figure out if this is
A) because I don't have any interest in painting the way other people paint.
B) because I lack the formal training to do good work.
C) because I don't use the right paints to create the effect... like oils for instance seem to be able to do things that acrylics cant... and I don't use oils (because I don't know how).
D) It might just be because I still see the paintings as works in progress, where as when I look at other people's work I see it as a picture of something... my work is "me trying to paint" and so I see it in the 2d format that I painted it on....
E) probably all of the above.

This makes me think I should take classes again. But my mind wanders so much I have a hard time painting real things, or drawing real things, I get bored... I move on, I mix images that fit or don't sometimes just because thats what I was thinking about. Anyway, it makes me pretty self conscious thinking of myself as an artist... I mean I am an artist, but I just looked at like 30 other artists and some of them were really amazing... I don't know how to do that. I would like to include more realistic things in my paintings and keep my weird anything goes style.