When I graduated from High School in 1978, my parents gave me some big, hard sided and heavy Samsonite luggage. Back then, one of the advertising campaigns had a gorilla bouncing on and throwing around, various parts of the luggage sets. Needless to say, the luggage survived nicely.
I can even attest, these 30 years later, that they still survive. I don't use them much any more. As I said, they are heavy and they were made before wheels were a standard part of luggage construction. They've been used as storage and moving boxes and, on occasion, as a prop for a table.
Now, they may be part of my simplify and clear out program. I don't need the table prop anymore, and anything in the luggage I've not unpacked in about 12 years are things I probably don't need.
I might keep the smallest piece tho. it makes a nice sewing box.