Well, from an 'investment' standpoint, 99.9% of the tractors owned by folks like us aren't worth what we put into them, and won't ever get that way.
On your other point, my F14 is "before my time", being a 1938 model. When I was a kid, the tractors I drove were in the 1945-1955 bracket. Still, I find I can 'relate' to it quite well, tho I'd hate like heck to have to try and farm 160 acres with it.
When I assume room temperature, I guarantee none of my kids will give a damn about it, and it will get sold at auction, probably for scrap metal prices.