Given the future state of the US, economically, I agree. I know a few self employed mechanics and business is booming. People can't afford to buy new cars, or in many cases get loans in general, so fixing the old one is the only option. I see this as the beginning of a long term state of affairs.
Edit: If I were you I would look into Automatic Transmission repair/replacement. A lot of engines will outlast multiple automatic transmissions.