I have no need to borrow bags, but I WOULDN'T HESITATE to lend one of mine to a friend.
I never understand WHY this is such a big deal to other people. I'd let a friend use my CAR, or even my HOUSE if she needed to. We're talking about a HANDBAG, which really doesn't mean squat in life's big picture.
Yes, it's just a bag, but my average handbag costs $1400 and that's a lot of money if the friend trashes or loses the bag.