If you like what you do, that's all that counts. However, I'd recommend making some long-range plans, since the "physically demanding" work you're doing today may no longer be appealing as you get older. If you've had it with healthcare, then explore other avenues: engineering, business, accounting, culinary work, or even less practical fields such as writing, music, etc. I am a firm believer in re-inventing ourselves every 10 years or so. The worst thing that can happen is for us to get stuck in a rut and become bitter seniors with a bunch of unfulfilled dreams.