I guess I really never looked at them as kind of an investment but I can see that.

Above all that you said that I agree on, another benefit is that you already paid for the tax after you bought some of these and just waiting for it to appreciate. I thought about home-made preserved goods but that would be difficult to market when canned goods tend to be more publicly trusted in preservation and can last longer? I'm not sure how home-based food preservation practices can last long.