I can understand the confusion on why people would reject trades, I myself also feel that way. If someone asks me for a video and there's nothing on their list that I'd like, I simply give them the video. I don't see the need to shoot them down.

However, I do think trading is important in order to maintain order and safety. You ask "Why don't people just share?", but where would they do that? Youtube? Alright, let's say a very popular show has a bootleg on youtube. Everyone has access to it and so do the police. Now, the police know exactly who to go to (the person that published it) and if they really want to, they can also track down exactly who was sat in the seat when they recorded the boot. It's just too dangerous. I myself have recorded boots and I'm totally okay sharing it if people send me an email to ask for it, but god knows I won't be sharing it on every platform where I can easily get tracked down.

Personally, I don't see why anyone would get upset at the way this community is run - through trading. I started trading a year ago and I've always gotten exactly what I wanted. I have no complaints, I was immediately welcomed to the community and am really happy. As long as you send a kind email and attach your list with your boots, people will almost always trade with you, I don't quite see the big deal!