When is it time to throw in the towel?

Bondo isn't the end of the world for me. I'd take a bondo'd mopar over a new car any day. Rust, dings, scratches, character! Perfect paintjob= can't park it without fear of coming back to some new scrape. I did 100% of the paint/body on my car, 1st timer, under a grand including paint, bondo, compressor, gun, regulator, etc. $13,000 gets you a hemi