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
@2psyop I had the same feelings as to the upper limit of my spending - in this case with respect to amp pricing.  I decided that $30k ish was my upper limit for any amp.  Then I heard the D'Agostino M400 and decided that it would increase my personal enjoyment of my system to such a degree, that although I still deemed the price ridiculous, it would be money well spent.  Here I am a couple of months later and I now feel that it was a "bargain" for what it has done to my system and my personal emotional satisfaction when I listen to my system now.   Sometimes you have to be flexible to get to where you want to be. 
and again, if you buy used, especially cables, you can often sell in a few years for no/little loss...
I don't know that anyone has a Need to buy expensive cables or other products, but when an expensive one sounds great, maybe you just have to if you can...I look at it as giving myself a loan, knowing I will get most/all of my money back when I sell in a few years...
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bar81
... I decided that $30k ish was my upper limit for any amp. Then I heard the D’Agostino M400 and decided that it would increase my personal enjoyment of my system to such a degree, that although I still deemed the price ridiculous, it would be money well spent. Here I am a couple of months later and I now feel that it was a "bargain" ...
I understand completely and I think many audiophiles can relate to this. My introduction to the high end of audio was an ARC D76A amplifier that a friend of mine bought used for $600 back around 1980. I thought that was crazy-money for a 60 watt amp - until he let me try it in my system. Then I saw the light. Adjusted for inflation, that $600 would be about $1,900 today. That now seems to me a rather modest price for an audiophile amp.