take for granted

ta för givet, ta för given

1. (transitive, of a thing) To assume something to be true without verification or proof.

2. (transitive, idiomatic, especially of a person) To give little attention to or to underestimate the value of; to fail to appreciate, especially something one has grown heavily accustomed to; not to value or care for appropriately, out of the assumption that the person or thing not valued cannot be lost.