The phrase, "it is no picnic", usually refers to something, someone or some event that is not fun or relaxing. Conversely, picnics are supposedly fun and relaxing, sustaining to the body and spirit.
Growing up, when my family had been apart for long periods of time between moves to new cities for my Dad's job, he usually wanted to spend time together with a picnic. He loved nature, healthy food and time together. That's not to say that there weren't ants, other creepy-crawlies, sudden gusts of wind/rain, or eye-rolling from my sister and/or I. My dad loved picnics.
What's your metaphorical "picnic"? That thing you like to do with other people that makes you feel great?
My picnic is going out dancing. I love a good DJ, swing band or 80s cover band. Though I lack formal training, general skills or innate rhythm, I make up for it with enthusiasm.
I also love playing board games with friends: especially Clue, Apples to Apples and Taboo.