Just too expensive
While I will agree that LED bulbs are a great way to cut back on electricity usage, especially in traditionally well lit areas like kitchens, they aren't all they're cracked up to be. They aren't as powerful and without planning, your nice, bright room can turn into a dungeon.
On top of that, they're still very expensive per bulb and it takes a long time to cover the cost in savings. Years even and while these ones are supposed to last five years, at $32 a pop, I wonder if you ever make back your money.