To give little attention to or to underestimate the value of, to fail to appreciate.
Usually the epiphany of having taking something for granted comes after its already gone.
A character from the PS2 RPG, Tales of the Abyss. He has a beard, that is the source of his powers and eyebrows that shoot lazers. Hates Scores and thus doesn't watch a lot of sports.
A mediocre academic whose one career accomplishment is that he/she knows how to write successful research grants but has no idea how to focus that research for any pratical results.
Dr. Patterson is a rotten teacher but he has tenure because he's such a grant whore. He brings in 25 million a year for his research into the boxers vs breifs question.