No meaning in life is what makes life meaningful
Coming from an existentialist/nihilist/absurdist combo point of view, I believe the lack of meaning in life is what gives life meaning because our only purpose is to exist. Think about this. The chances of you or I existing are astronomically impossible. From the big bang, every single atom lined up correctly, every process happened properly, and every development occured perfectly over billions of years to result in us. By our existence, we won the greatest cosmic lottery ever. The universe promises no meaning, only existence. Our purpose is simply to exist. Prior meaning makes things dull. The toaster is meant to make toast. Initially, it's very valuable as you get to experience a new thing. But over time, as you get used to toast, it loses value. But when nothing has a preassigned value, especially socially, it's meaning is renewed with every new use, every coming back to it, every new idea with it. Such is life. When you are the arbiter of value, everything becomes more valuable because there is no longer a frame of reference for value. And if you do not value life, then you die. It's harsh but true. And many people, once they hear this statement, they tend to realize the value on life they previously discarded.