Your toaster would be fine if you would control the variables you input. Bread and air humidity and temperature, keep it clean so the mechanisms don't jam, etc etc. You don't wanna think about these things, but want to pay someone to make a machine that does it for you. Just because you
want that and people will say they can provide it, doesn't mean its available.
Bullfrogs want wings, too; so they don't bump their little butts when they hop.