Why inevitable? Those were chosen due to their endurance + bounciness. Clothing elastic would have been a less than ideal choice, while bungee rope would have been a bit thick.
They're way superior to rubber mounts in terms of the amount of vibration they can absorb. The only thing I have to do really is to stick a warning note on the back of the computer that says "Remove HDD Cage before moving", which I should hopefully see when I unplug the case prior to movement.