I felt the same at first. When I tried it on at the store, it had all the paper inside and felt "bulky." I bought it anyway coz I loved the style and color (plus the 20% Macys F&F was an added bonus).
Then I took it home and unstuffed it. It was fine after that. I put in all my stuff. It felt fine and I had no trouble with it staying on my shoulder or having it "sit" on the chair/table.