It's been rectified with DD3 and will be in short order with CD3.
I doubt that very much, although some CC3 users certainly do that. That notwithstanding ...
This is pretty decent advice.so if you are long-term serious, you might consider getting GIMP first. GIMP is free and you can see if it meets your needs, and then decide if you want to move up in the direction of CC3 or of Photoshop.