each to his/her/their own

each to his/her/their own

Each person has their own unique preferences, and that is OK. It's perfectly fine for you to have different interests than your sister—each to her own.
See also: each, own
Farlex Dictionary of Idioms.
See also:
  • Let every man skin his own skunk
  • of (one's) own accord
  • of one's own accord
  • of own accord
  • of your own accord
  • (the) odds are (that)
  • odds are, the
  • lights
  • know one's own mind, to
  • noggin