the steipler goan lived very poorly. his talmidim tried convincing him to put a lock on his door for safety purposes but he refused saying it was a luxury!
well they went to his wife and she agreed. a few days later his wife lost the key and they were locked out of the house!
the steipler told his talmidim that this is a great example of marbeh nechosim marbeh dageh!! its amazing how for him this was a luxury!