I'm more into riding really. I'm not a collector. There are several reasons I prefer vintage or classic bikes. The old bikes were little works of industrial art, and new bikes are obnoxious rolling billboards. I trust steel to hold up to dings from sticks and rocks, and to essentially last a lifetime. Carbon I expect to have to replace in 3-5 years. Lastly I like the quiet ride of a steel bike with aluminum rims. Many modern bikes sound like noisemakers.

Not really nostalgia for me. I got my grail bike when I was 14, and I still have it. Likewise, it really isn't any great joy for me to work on bikes. I wrenched for a living all through school and then a few years. I'm good at it, but I've had enough. That said, I've always enjoyed saving cool vintage bikes. I did a lot more saving when I was younger, trying to turn the hipsters onto vintage bikes.