What is good for one person is not necessarily good for another. - A proverb, * /Even though Jeff likes to swim in ice cold water, his brother Tun hates it. This is understandable, however, because one's man's meat is another man's poison./ Contrast: WHAT'S SAUCE FOR THE GOOSE IS SAUCE FOR THE GANDER.
ONE MAN'S MEAT IS ANOTHER MAN'S POISON
Meaning of ONE MAN'S MEAT IS ANOTHER MAN'S POISON in English
Dictionary of English idioms . Словарь английских идиом. 2012