Really like that Tumblr quote FBM.
I also find a certain reassurance in the fundamental insignificance of all things, including my personal existence.
Although occasionally I do find it difficult to appreciate this perspective. As a human being, I want to 'make a dent' on the world as well, and at times, the idea of just sitting back and reflecting on how it all "doesn't really matter in the end" often just seems like a cop out from pursuing ones potentialities.
I think for some people such a view may function in that way, to alleviate the guilt we feel for not having pursued our possibilities. It's an antidote for our guilt.
However, it may just be that the reason I sometimes feel guilty and unsatisfied with life is just because in those moments, I have not really let go of the need or desire to pursue my potentialities, my goals and dreams, and the existential dread that is consequently experienced in light of the insignificance of life, is due to my clinging on.
It just sometimes leaves me wondering...do we comfort ourselves by reminding ourselves of our 'ultimate insignificance', in order to reduce the guilt we feel for not having fulfilled ourselves?