Actually a lot of baggage handlers all over the world are rough and 'simply' throw. Its not them (probably some are), but the job demands them to do so. In reality you cannot expect them to just simply put those luggage and items nicely or handle with care. When you have tons of luggage and limited time to spare, you just have to throw it. Only those that have the fragile sticker may ... i repeat may handle with slight care. Imagine you a baggage handler handling different sizes, different weights of luggage and different designs but limited time to spare.
By the way I'm not siding with baggage handlers. Some of my luggages rosak, but as long as its not totally destroyed, I'm happy with it. My luggage was those cheopo or recycled luggages given by family members. But at least it was able to withstand the punishment around 20 trips when I was travelling within Oz, Singapore and KL and back to Oz. Now just leave it at home to store my books and notes hehehe.
Anyway, as far as I know, friends of mine used samsonite and victorinox luggages when I was in Oz, and they were happy with the purchase. Best of all, it surely save them a lot of weight from the luggage and more items to put in compared to normal or sturdy looking luggages. Every KG counts when your at the counter hahaha.