This drives me fucking nuts at work. I've resulted to responding "no, buy your own shit" anytime i asked to borrow a tool. In general, people who even need to borrow tools is probably because they lost their own tool. If they lose their own tools, no reason to think theyre not gonna lose yours. People who dont buy and maintain their own tool sets cant seem to understand why people who do get so angry about having their tools lost. This is one of those things that makes me extremely annoyed.