30[/B] years is to deny the truth. Obviously there isn't exactly much in a fixed gear bike so the differences won't really be so obvious there. Compare a 30 year old geared steel-framed bike with a modern geared carbon fibre-framed bike, and they are.
I actually ride a fairly heavy 853 framed hardtail mountain bike offroad and usually a pretty heavy steel-framed Basso on the road so I'm not exactly going around on state-of-the-art technology myself but it doesn't mean that I can't see the advantages of brakes that work really well, very light bikes which are stiff, comfortable and responsive, a huge range of gears which are still closely-spaced, gear shifters which are immediately to hand, lightweight comfortable saddles, clipless pedals, clincher tyres which are almost as good as tubulars...
If you like old stuff, fair enough - I don't. I know people who have been happy to ride 1,200 km and 1,400 km audaxes on old steel-framed bikes. If I had the money, I'd always choose a nice titanium or carbon fibre-framed modern bike.
Yes, a good rider on an old bike would thrash me on any modern bike, but if they were riding a modern bike and I was on an old heavy one they would thrash me even harder!
Enough, already...