If you can suffer me continuing the nutrition analogy: the first need, love, is like what air means to us. It is often taken for granted but it is the most necessary aesthetic need, and without it we would be dead in minutes. The second is a close relative to love and often fills it, as the sky is filled with cloud or mist: beauty, which I liken here to water, because without it too we would soon perish.The third aesthetic is earth, which can be broken down into many forms. It is like the solids we consume that are of many characteristics and nutritive qualities. Earth is such a broad arena of events for us that we need go no further in identifying a fourth aesthetic need, though I would for arguments sake add the abstract as the fourth need, but the less discussed or suggested about its nature the better. So there you have it. A bit too simple maybe?
Well, no, not too simple. I see what you're saying. Those things you mention are important. But I thought you meant 'aesthetics' as described in a dictionary:
1.A set of principles concerned with the nature and appreciation of beauty, esp. in art.
2.The branch of philosophy that deals with the principles of beauty and artistic taste.
But I can see that the needs you are talking about are fundamental to life. I think what I'm saying is how to understand and navigate the present through artworks. To say, okay this has happened, so I must make a right (or whatever). To make pictures as points on a map. The map would be a model of the present. So it's important to think hard about what a picture of the present is going to look like. Not to reflect the doom as this is pointless, and not to paint escapist pictures, but something that houses the present and its opposite simultaneously, if you will.