Couda2K beat me by two years!
I'm 28 and me first experience with what I always used to call "ramhorn" bikes was a horrible one. I was a kid and I tried to ride a cousin's bike that was way too tall...and I kept falling off.
My re-discovery of vintage ten speeds was brought on by a natural aversion to trendiness so when I moved to Portland and wanted to get back into bicycling, I started working on improving my existing mountain-type bike and looking for a ten speed. I was lucky enough to find one and get it running again. Through all this, I found that wrenching on these old contraptions is easy for me, which is a good way to keep me interested (the garage is my favorite room in the house).
I also feel the same way many others do: hating disposable society, and loving the simple, beautiful, economy and grace of a lugged vintage frame.
Not being brought up with a particular brand, I feel a strong pull towards European classics, and of course you can now by some of them at a very affordable price!