I love my carbon bikes, I love my steel bikes, I even enjoy my aluminum bike. Not especially fond of my one downtube friction shift, but like the bar end friction shifts. I enjoy my Di2, and the other integrated "brifters". Disc brakes work for me, as well as rim brakes on the older bikes. It all depends what mood I'm in that day. Choice is a good thing, not always based on economics. I buy and build my bikes to ride, not as an investment, and spend very little time worrying what other preferences people spend their money on. I used to really enjoy passing guys on fancy carbon, while riding my old school steel, until I became the guy riding carbon. Now I hate getting passed by e-bikes, but that's life. No plans to go "e" yet ... I'm only 72. Buy what you want, love what you ride ... but just ride.
Been riding this Legnano since new in 1964.
Built this Raleigh from an abandoned stripped frame.
My newest bike, Di2, discs, carbon everything ... its all good, just ride.