Good topic this! Gets you thinking from a different perspective
Certainly in my youth we found that gas pipers were no good. They cracked and dropouts broke off and stuff like that as well as weighing a ton - Saw more than one mate with a lower end Raleigh calling that 15 year F&F Warranty
Also while being nice rides the earlier lugged 531 bikes had an Achilles heel, a heavy frontal would get transmitted by the cool lugs to the butted down tube and crease the damned thing
Those old school Tange GTs were literally tanks though
I had this bike for a while before I got into serious racing MTB's and it was HEAVY, but tough. My later bikes were tough, light and had a degree of flex which was quite disconcerting at the time. Every time I put the hammer down it flexed and I thought it was going to snap! It took me a while to get used to bikes being "alive" underneath me.
No matter how bad it gets... it could always be worse.
1996 Orange E3 - A601
1996 Orange P7 - A602
Repairs: All the various bikes of my 4 children and various nephews and sons of friends, etc. - Just give me the cape and call me "Bicycle Repair-Man"...