Weeds . . . at least someweeds . . . can be put to use in your garden.

Admittedly there are some types of weeds (wire-grass and nut-grass for example) that the planet would be better without, but other weeds are valuable as a sort of living green mulch to lay around plans like basil or tomato.

In the center of the photo above is a basil plant I rooted in water from a cutting, surrounded by weeds I pulled up and laid next to it.  As you can see, the basil plant looks very happy.