Variety is the spice of life, but is it sweet or is it sour? Revenge is sweet but it leaves a sour taste in your mouth.
When you think about it, life seldom leaves any taste in your mouth.
There may be a remembered sound or the feel of a gentle breeze on your skin or a sound that triggers a memory, but seldom is taste involved with anything but the here and now. I do remember the smell of cookies baking or the smell of a turkey at thanksgiving but the taste is not a remembered thing.
As for the sweetness of revenge, I don't buy that. Too often we regret any acts of revenge. It's a feeling that we are better off without. Looking back on the many wars we have had and the bitter enemies who later became stalwart friends, we can see that any acts of revenge would later be regretted. It would seem that hatred and revenge go hand in hand, but never last. Friendship and tolerance lead to a happier life. I hope that when I leave this life, I leave only friends – no enemies.