Does the frame have a chain hanger brazed on the dirve side seat stay??
If it doesn't, the picture of your very scratched up drive side chain stay says very clearly why one should have one and use it every time they take off the rear wheel.
If you are planning on stripping the frame anyway, you might consider having a chain hanger peg brazed on to the right side seat stay by a frame builder so you can avoid the same paint damage on the chain stay in the future.

Chombi