Time and familiarity anesthetizes our sense of wonder. You only have to observe a young child to see what looking at a world full of wonder is really like. As time passes we fall into familiar routines in familiar places that dulls our sense of wonder and denies us the joy of just how amazing our existence is.
Just think about it for a minute. We're riding a big ball that's spinning around a giant ball of fire in a universe that is so expansive, our little planet is smaller than the smallest thing we can even imagine. I've often wondered if we are not just on an atom that's part of a molecule that's part of something so large and expansive that it exists far beyond even our wildest imagining.
It's never too late to rediscover your sense of wonder.