It really depends on what has been borrowed. I myself seldom loan anything essential that I will often use. Most things I loan to others, if they don't return it, I could easily buy another one for cheap.
Someone occupying a shared bathroom at a longer time than you like?
What goes up, will inevitably come back down. Whoever you have to step on when you go up, you will be at their mercy when you go down.
The truth is strictly what the ones in power perceives it to be.
Enjoy any good things, even the little and menial ones, as you will never know what impending distresses could descend upon you in a moment.