This is a really close one but i will go for childhood. Childhood is just filled with a form of eating and playing with little or no worries about life. You have no worries of what you will eat tomorrow or anything. In childhood, everything is provided and all you do is live in the moment. Everything supplied at your beckon call and you hardly notice how hard life can be because you are shielded from the hard parts and you are only made to see what is good for you.
Adulthood is full of so many troubles and challenges and the constant worrying of what the future holds and the constant pressure of responsibility on your shoulders just keek wearing you out..
I mean, look at a child sleep and an adult sleep and you will understand and agree with me for sure. The child sleeps so peacefully and there is this form of no worries and worry-free life written all over their faces while the case is very different for adults.
That is why i am going for childhood most certainly. My childhood memories still bring me so much joy at tumes. The peace i felt and how i saw life back then was so different from the way i see it now. All i can wish at times is why the way i saw it as a child could not rather be true than the way i see it now.