It's easy to forget just how important trees are. Not only do they line our streets and allow dogs a place to relieve themselves, but they literally give us life. They make our world possible to live in. If you live in a densely populated city with little access to nature, you know how much you miss them when they're not around. You start making special trips to the park just to look at them and be in their midst. Sitting underneath the shade of a tree is one of the peak human activities.
We've been doing it for thousands of years and it's not getting old. We feel their majesty, we sit atop their roots, and we feel safe under their big branches. The best way to celebrate trees is to plant them, care for them, and give 'em a hug every now and again. The second best way to celebrate them is with memes.