Do I use my printer very often? There are certainly days when I do not use my printer at all. It takes me over five years to use a 5000 sheet box of printer paper that I usually print on both sides.
When I retired in 2010 I had a recently-purchased ream (500 sheets) of printer paper.
I still have about half of that ream.
When the inkjet printer refused to print in black&white (using the separate black ink cartridge) because the yellow ink cartridge had dried up and was nonfunctional, I bought a cheap B&W laser printer - which cost only about 3x as much as a set of color ink cartridges for the inkjet.