An organism emerges from the Earth. It grows naturally with other surrounding plants. Its carefree of the environmental culture. It finds its place while providing comfort and shade for those in times of need.
This is how misery spreads like weeds. It breaks through and disrupts while establishing a new level of normalcy and comfortability. However, if you let it fester, it will continue to grow and suck all the nutrients of emotions within the environment.
Misery loves company.