The Earth is like your teeth. You need them and use them every day. So you brush them every day. If you only brushed your teeth once a year your teeth would fall out.
The Earth is not your teeth. It's not going to fall out or rot. Instead it's going to reject us like a healthy immune system rejects a nasty virus. Or reject us like a reasonable woman rejects a subpar man. Basically, like the dentally short-sighted child, we're setting ourselves up for failure.
"Earth Day" is not "everyday" when riding your bike is incentivized once a year. And while I'm on the subject, what's up with giving out non-vegan cookies and free coffee to folks who say they didn't drive? How does that convince folks to stop living lives dependent on the depletion of the systems that keep our planet habitable?
"Earth Day" is clearly not "everyday." "Earth Day" is just plain never.