Intrinsic value, a term in ethics.

It is absolute certainty of valuable existing in us and among us, undoubted, undeniable worth and meaning. One can think it is unmeasurable, uncountable, it is not necessary for humans to acknowledge? So when said art has absolute value (mathematical term) intrinsic value, what is it that is valuable in art? It’s mere existence, it is made by someone, it is a message, what? To understand value is to grow value something. What we most value as humans and how we become to value something is through necessity, guidance and skill. Our needs bring value. What kind of needs do we have other than basic ones to stay alive?