The Buddha discusses states of extreme bliss attainable through meditation:
Secluded from sensual pleasures, secluded from unwholesome states, a bhikkhu enters and dwells in the first jhāna, which is accompanied by thought and examination, with rapture and happiness born of seclusion.
...If you could really concentrate on a metronome, it would be more blissful than a symphony. The jhāna is also a strong contender as a theory of beauty: beauty is that which is compressible but has not already been compressed.
From Sextus: The idea of what it means to live in accordance with nature; gravity without affectation, and a careful regard for the interests of one's friends.
Even if you were to live for three thousand years or ten times as long, you should still remember this, that no one loses any life other than the one that he is living, nor does he live any life other than the one that he loses, so the shortest life and the longest amount to the same.
Cast everything else aside, then, and hold to these few truths alone; and remember, furthermore, that each of us lives only in the present, this fleeting moment of time, and that the rest of one's life has either has either already been lived or lies in an unknowable future. The space of each person's existence is thus a little thing, and little too is the corner of earth on which it is lived.
Everything that is in any way beautiful is beautiful of itself and complete in itself, and praise has no part in it; for nothing comes to be better or worse for being praised.
The cucumber is bitter? Then cast it aside. There are brambles in the path? Step out of the way. That will suffice, and you need not ask in addition, "Why did such things ever come into the world?"