Canada

The home you live in is not an investment if you aren't willing to downgrade. If you live forever in your home, you can't spend the money you'd get if you sold it because you won't sell it till you die. If you decide to sell it, and decide you won't downgrade, that you want an equivalent home, that home will cost approximately the same as what you sold yours for as it would have appreciated in value just like yours. In fact you'd lose the transaction fees. If you wanted to make money you have to buy a cheaper home. That typically means some form of downgrade. Size, type, location, etc. Yet many people don't understand this and believe that the home they own is an investment and that it going up in price is good for them. All the while their taxes go up with its price along with everything else they buy because everyone else also has to pay higher housing costs. It's irrational to believe this because it's simply not true. Therefore I say people believe this due to indoctrination. The process of learnint to believe something without critical examination of its validity. I'm just using the term because I think it fits the bill.

The home you live in is only an investment if you're willing to downgrade and you can only collect the upside on the difference in price between what you sell and what you move into. Secondary units are an investment proper. The scenario with classic games is like a secondary property because you don't need to buy an equivalent in price cartridge when you sell one you have.