If find it interest that in the context of Ecclesiastes 8, urging righteousness despite evil not meeting justice, that the one of the author’s concluding statements is, “So I commend the enjoyment of life, because nothing is better for a man under the sun than to eat and drink and be glad. Then joy will accompany him in his work all the days of the life God has given him under the sun (Ecclesiastes 8.15).”
You’d think that “eat and drink and be glad” would lead to all sorts of trouble. Typically from a religious perspective, having “fun” and being “good” aren’t thought of synonymously. If the overall Ecclesiastes perspective of balance is upheld however, I believe you can enjoy everything you have to the fullest without taking it to excess.
Sacrifice has its place in living God, but so does gladness.