So anything that is either used up or that loses value - which is pretty much everything there is apart from very few things that keep their value or increase -

So anything that is either used up or that loses value - which is pretty much everything there is apart from very few things that keep their value or increase - would fall under the same argument. That would apply to most loans, and even houses don't have a natural law that their values always remain or increase. Seems like a lazy and made-up excuse to me rather than an actual reason. I don't mind people making lazy arguments - I mind those that accept them unquestionably and even more lazily (because finding fault in other people's words is far easier) much more, meaning not anyone here specifically, but the fact that that argument could spread so far in the first place.