There are those of us in the human community walking around enclosed in self-constructed shells, shielding themselves from random stones flung or darts purposely aimed to hurt.
Taking no chances, even their soft underbellies wear secure armor against any possible onslaught. Nothing comes in, nothing goes out.
Others walking among us are tender as children still full of innocent trust like delicate blossoms fully opened, redolent with sweet nectar destined for honey, and seedpods freely given up on gentle Spring breezes carrying away bits of future beauty to distant fields of wildflowers, blissfully ignorant of tomorrow's killing frost. Everything comes in, everything goes out.