"People get from books the idea that if you have married the right person you may expect to go on 'being in love' for ever . . . In this department of life, as in every other, thrills come at the beginning and do not last. The sort of thrill that a boy has at the first idea of flying will not go on when he has joined the R.A.F. and is really learning to fly. The thrill you feel on seeing some delightful place dies away when you really go to live there. Does this mean it would be better not to learn to fly and not to live in the beautiful place? By no means. In both cases, if you go through with it, the dying away of the first thrill will be compensated for by a quieter and more lasting kind of interest. What is more (and I can hardly find words to tell you how important I think this), it is just the people who are ready to submit to the loss of the thrill and settle down to sober interest, who are then most likely to meet new thrills in some quite different direction."
C. S. Lewis, Mere Christianity
I don't have it handy, but in Gaudy Night, Dorothy Sayers has a variation on this theme: It is the people who snatch at things, especially love, who, in actuality, do not know what they want and will never attain happiness, let alone love or joy. I read this passage in Lewis and have not been able to shake it from my mind, constantly turning over people I know, some who are so very dear to me, who are unable or at least unwilling to submit to the loss of the initial thrill and so flit from one thing to another, trying to maintain that level of living that is impossible and unfulfilling, both. I have been thinking of it in my own life, too, of the loss of that sort of intense, blinding, world-shattering love and accepting a much quieter, more peaceful sort of love. At times I nearly despised myself for it, thinking I was "settling" or "giving in," but it is neither of those things. Huge conflagrations die out--sometimes immediately, sometimes after burning for days or even weeks. They take too much to maintain. They are too big for themselves. And, more often than not, they are destructive. It is the hearth fire that can burn for years, that provides heat and warmth without consuming everything in its vicinity, that can be maintained and used and enjoyed in the actual living of life. It is the hearth fire, too, that gives the sort of light that one needs to enjoy and explore the new "thrills." When faced with the forest fire, one has no capacity for looking at other things--the fire dominates.
Applied to pleasure in general: Consider for a moment the sorts of things that modern media encourages. It is all about finding the "thrill," about moving from one experience to another, without cohesion or understanding or even necessarily enjoyment--anything to keep from growing bored, to keep from seeing emptiness. For snatching at thrills, whether in art, love, food, music, or anything else, is in fact nothing more than the desperate attempt to hide one's one emptiness, futility and despair.