There are so many rabbit holes to fall into with a question as both unambiguous and strikingly specific as this.

It begs an absolutist response, which is quite a shame seeing as most scientific endeavors are edited, rewritten, or entirely abandoned as new knowledge is gained, and old assumptions tossed to the wind. Absolutism is simply an expression of confident ignorance in the face of yet undiscovered municipalities of knowledge.

Why does existence exist? When one asks a question like this, is one expecting a single answer? How many facts contain a unified descriptor in which no other facet entertains it? As all matter in the universe, there is no singularity; this isolation is an obfuscation to the truth of nature - all things are formations, polarities, dualities, or entanglements. We may label subatomic entities as lone wolves, but in what existence are we peering into a noumenon? Why does existence exist is as valid of a question as the God Ontological question - and if one seeks to invalidate that, then other questions that peer into existentialism must admit its very same faults.

Philosophy is an incredible phenomenon. I appreciate this article for what it is: thought provoking.