I bought an HP printer because the print head is part of the cartridge. I don't do much color printing and have a laser for B&W. The ink would dry in the print heads before the first cartridge ran out with the Canon and Epson printers I used to have.
I'm willing to pay for HP cartridges to get a new print head with each one. I feel that's cheaper and less bother than throwing away the whole Epson / Canon printer or the trouble and expense of replacing their print head.
Perhaps my case is unusual.