To me the moral level of consumption is as close to the minimum required to survive and make an optimal economic contribution to society. Everyone needs happiness and entertainment in their lives. The struggle is avoiding excess.
I agree that most of what people spend their money on is the pursuit of happiness and entertainment. My view is that the path to true happiness does not lie in material goods or personal experiences. Rather, helping others in their struggles and seeing their lives improve leads to fulfillment.
I want to live in a world where watchmakers (and other artists) are free to make any awesome and expensive thing that they can imagine. Man does not live by bread alone.
It's not enough to just live. You have to have something to live for. Let it be mechanical watches.
For things that can be digitally distributed at virtually no cost, or can be bulk produced at low cost (books, music, board games, etc.) I am fully supportive. For things that have a high economic opportunity cost, such as extremely complex watches, luxury cars, things of that nature, I have a very low tolerance because the cost is human life. As a species we have not yet reached a point where every human has the necessities of life. Once everyone has access to food, water, shelter, and internet (education), then I am all for exploring the limits of our potential in every regard.
As an aside, I think it's your money, and if you want to spend more than I would spend on a server (which is to say, way more than I'd consider spending on a car) on a fancy watch, well, I'm going to make fun of you a little bit, but ultimately, it's your money, and your judgement. But, if fancy watches are primarily signaling, which I believe to be the case, it seems to me that you could figure out how to get the same signaling value out of proving that you gave a certain amount to certain stylish charities.
Mechanical watches are moving art and are rarely purchased out of need. With the advent of perpetual automatics, they approach the ideal of mechanical perfection - a miniature machine which can accurately track time (and many other features) in extreme environments without the need of a power source. As such, they continue to appeal to many different people - with higher end, more complicated designs continuing to come about at higher prices. I'm a software developer and I love my automatics for both their technical merits as well as their aesthetic beauty. To each his own