take something/someone for granted
US /teɪk ˈsʌmˌθɪŋ ˈsʌmˌwʌn fɔr ˈɡræntɪd/
UK /teɪk ˈsʌmˌθɪŋ ˈsʌmˌwʌn fɔr ˈɡræntɪd/

1.
to fail to appreciate someone or something because you are too familiar with them and do not realize how important or special they are
:
•
Don't take your parents for granted; they won't always be around.
•
We often take our health for granted until we get sick.