Save on printer toner and ink cartridges

I will often print to pdf prior to making a physical print for several reasons. It allows me to see the layout, useful for printing webpages. Creates an exact copy of the print that will remain the same even if the source is changed. The size of pdfs are typically much smaller than the source documents. Serves as a backup of sorts. And for some odd reason I think it so damn cool to make pdfs.