It angers God when we take His blessings for granted

Psalm 90:7, 9, 11-12

For we are consumed by thine anger, and by thy wrath are we troubled. For all our days are passed away in thy wrath: we spend our years as a tale that is told. Who knoweth the power of thine anger? even according to thy fear, so is thy wrath. So teach us to number our days, that we may apply our hearts unto wisdom.