You're saying that, as a financial decision, spending $2.75M isn't necessarily stupid because $2.75M is peanuts to some people.
I agree, though it depends on their goals. If they want to make more money, it's obviously a poor decision. If they want to look like a vain, wealthy, frivolous person, then it's a great decision.
My comment was from the angle of whether I think someone who would spend $2.75M on a watch is A) cool, B) a good person, or C) a good decision maker.
Related to all of those aspects, I consider "looking like a rich person" to be an incredibly sad, ridiculous goal, especially when $2.75M could be used for such interesting, useful things (both selfish and unselfish).
And, of course, it's not 100% relative because goods/services cost absolute amounts of money. Fifty dollars is equivalent to, let's say, 10 hamburgers, and $2.75M is equivalent to 550,000 hamburgers.
Put that into any other unit you want to (charitable donations, vacations, houses, massages, political contributions, art, etc.). The point is that throwing away $2.75M on something frivolous is far different from throwing away $50, no matter how much money you make.
Someone who can buy a $2.75 M dollar watch likely looks at life very different than you do whether they go and buy a watch like that or not. Don't assume people who get what they want are naive, greedy, vain etc. They might have different reasons that on a relative basis are just as good as any you'd have.
It's not just that the watch is $2.75M. It's just that the markup is so high. It's being sold for that price just to sell it for that price. It's not like paying for the construction of a $2.75M house, which might cost nearly that much to build.
And as far as conforming to my value system, I acknowledged that there was subjectivity in my reaction. But I don't have any problem with that. I also wouldn't mind including my own subjective morality when criticizing Bernie Madoff or John Wayne Gacy. Value systems may be individual and entirely relative, but our society has agreed on some useful tenets that I happily subscribe to (don't harm others, don't be greedy, etc.)
I would argue that it's a terrible way to store value because very few humans in the world would buy a watch (or ANYTHING) that expensive. It's one of the least liquid assets you can own, certainly less liquid than a car of the same price.
Oil or copper, by contrast, are useful in and of themselves and will continue to be valuable to human societies for many decades. You can also trade them electronically, which makes them portable.
If you can't trade those things electronically, the world has fallen apart so completely that you're pretty screwed anyway. It would be complete and utter chaos, and on one would be buying your watch.