I used to wonder about the same thing until #2 and 3 took hold of me and I became a seller of some new barely used expensive equipment. Then I understood the ads that claimed "10 hours use" "barely broken in", etc. Ultimately, I was able to build a system that I am very happy with after trying new, demo and used equipment at home in my system and then selling what I didn't need or want. The overall cost to me still represented a savings over retail when I add up the cost of the purchases that I kept.
There is no way that a retail store would have allowed me to have extensive home demos of all kinds of equipment, so I am happy with the process and happy that A-gon exists for crazy people like me (us).
There is no way that a retail store would have allowed me to have extensive home demos of all kinds of equipment, so I am happy with the process and happy that A-gon exists for crazy people like me (us).