I really cannot stand childish pissing matches and don't want to get involved, but would like to tell a brief story.
A few years ago (maybe more) I loaned out a custom made set of valve adjustment valve covers for a small Chevy to a guy I worked with, he lived in the Sierras and asked if he could hang on to them for a few weeks, obviously they were not a tool that I was using on a daily basis so had no problem with it...
Well, several months pass and I have not heard from him, I sent him a text message to his company phone and it was undeliverable, he ended up taking a job with another company.

I was asking around to try and find him and apparently he found out I was trying to track him down, he calls me at work one day and asked "what's up", so I asked about the covers, He says "holly crap, I forgot all about them", told him "no big deal, whenever you can get them to me", so about a week later he calls me and wants to meet somewhere for lunch, so I meet him and he gives me the covers and apologizes and hands me an envelope and says to open it later, so we have lunch and so on and we go our seperate ways, I get back to my truck and open the envelope and there are two one hundred dollar bills with a card saying sorry and such.
That right there is a stand up guy, so for Christmas that same year, I made him a set of Gen I and Gen II adjustment valve covers and sent them up to him...
I would say that borrowing something should never ever cost a friendship, no matter what...Lifes too damn short and friends too hard to come by.
FWIW and offense intended, you should feel like an ass, someone helped you out and you shit all over him, I bet your the type of person who gets ticked off when someone don't help you out when they have the ability, I wouldn't...
GT