What makes someone take things for granted?

Not very grateful for what they have or the people they have in their lives

They don't see the value of the thing or the person they're taking for granted.

Everyone takes something for granted. People don't always realize what they have until it's gone. It's sad, but true. People who are being rude and trolling on this post, get over yourself.

When things are handed to them and not earned.

Set expectations.

Opportunity