I will never, ever buy another inkjet printer as long as I live. Those cartridges seem to dry up, clog and die even if I don't use them. I got sick of spending $30 on a set of cartridges, only to get a hundred pages out of them before they became useless from age. At least laser printer toner seems to have an almost unlimited lifespan.
Laser toner is essentially tiny flakes of plastic, that get melted onto the paper during printing.
Inkjet ink ink will dry, especially the ink exposed to air at the end of the nozzeles in the print head itself. If you don't print anything for a few weeks, your ink cartridge will become unusable.