take something for granted
take (someone or something) for granted
1. To consider something as being innately or unfailingly true, correct, real, or available. The plenitude of our natural resources has resulted in most people taking them for granted for most of human history. I guess I just took your support for granted, because I thought you would be there for me no matter what.
2. To underestimate or undervalue someone or something; to not properly recognize or appreciate someone or something. The boss takes us for granted, but if we weren't here, this whole company would collapse. I'm just getting fed up because it feels like you take everything I do around the house for granted.