No, its not funny, though there would be some that say why spend so much just to use cartos. A mechanical device is just a simple no muss no fuss thing. It will last forever, no wires , no electronics to fry. If it falls in the water, no worries , just dry it off and keep on vaping. You might fry a battery and or your atomizer, but the PV will be around forever.
I guess if it falls into a wood chipper or gets run over by a very big rig going really slow, it might get damaged.