I recently purchased a diamond engagement ring for my fiance. That shopping experience perfectly encapsulated everything there is that I could possibly hate about making a consumer purchase:
1)Product is monopolistic, with supply artificially constrained in order to generate prices that reflect that. Actual value of say, a one carat diamond, is probably a few hundred bucks max.
2)Cultural demand was artificially crafted by a sustained (admittedly brilliant) marketing campaign by the monopolistic entity years ago. It is now ingrained into the core of our culture. Annoying to think that it didn't exist at the beginning of the previous century and that its arrival was not organic.
3)I cannot realistically educate myself on the product in any meaningful sense like I can with a TV or a car. Yes, I visited many jewelers. They all were quite happy to educate me on how diamonds are graded. I read up on my 'Four C's". I peered into the jewelers lens and nodded as I saw the slight imperfections of one stone vs another. But you know what? At the end of the day, there is NO WAY I could accurately grade them, even after all of my research and hands on 'training'. Is that diamond a VS3 or WS1? No idea, but one is far more expensive even though they look the same under the scope. It would probably take me years to be able to identify why.
4)Blood diamonds. People are being enslaved, murdered, and abused in order get these stones to me. Not to mention other horrible labor abuses, and the guns that those diamonds go to fund that wreak havoc in the origin communities. Honestly, there is no way to tell a stone's history, especially when you are dealing with a cartel. You can't exactly ask for proof, and anything they tell/show you...can you really trust the authenticity?
So. Anyway. Yeah. I mitigated the 4th point by buying a lab grown diamond. (Not much cheaper than mined diamonds btw if you are wondering).
Don't get me wrong, -I was happy to give my fiance something that made her so happy. One of the hilarious premises we all learned when we took our first Econ class was that in order to make those simple models work, we assumed consumers were rational. We all know how true this isn't. This purchase exemplifies that for me. I'm acutely aware of how irrational I personally find it, while being simultaneously aware that I have no problem setting that aside in this (somewhat rare for me) instance. I am infinitely more rational with purchases I make for myself than for those I love. That last sentence is where a lot of margin lies for a LOT of products.