why do people feel the need to buy expensive cable


I have tried expensive cables and one's moderately priced. I would say there were some differences but I can't actually say the expensive cables were better. IMHO I believe a lot of people buy expensive cables because they don't actual trust their ears and are afraid of making a mistake. They figure the expensive cables are better for the fact they cost more. If you have a difference of opinion or share the same thoughts, I would like to hear about it.
taters
I've been slowly replacing my cables with low to medium upgrades from the original .50 cent supplied ones and note a significant increase in the  quality of sound. My last purchas of a pair of 18" cables said to give them a 175 hour burn in time. WHAT? Can that really make a difference to the human ear?
Obviously the directional arrows on speaker wire is so you know to reverse them in Australia and  Bizarro world. 
Blah blah blah. Cables make a difference if you can’t hear it you are in the wrong hobby.  You should go be a videophile!
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HDMI may not I,don’t know. But audio cables make a difference. I don’t have to,have anyone tell me I hear it myself. If you can’t hear it don’t buy it