If you want to get philosophical about this, everything is evanescent. Life, the world, and the universe and all things in it. Nothing is forever.
The flowers will fade and bubbles will pop. The rainbow will be gone even while you look at it. The galaxy and universe will decline, vanish, and be no more.
I refuse to get gloomy about the ultimate passing of everything. Not today. I’m happy to live in this evanescent piece of life. I won’t be here forever, nor will you, or anyone. We may not last until tomorrow, for all I know. But I’m here, now, and it’s spring.