I do quite often. Sometimes when I think about the entirety of the universe (at least the one we are aware of) I start to wonder what I'm doing here at my job, or what are any of us doing existing at all? I can't help but think what's "outside" the universe (a very human and naïve way of thinking), what's the meaning of it all? I conclude there isn't any meaning, then I recalibrate my mindset and return to caring about all the meaningless things in my brief life.