you ask "seriously, why do we need this?"

why do we need TV-remote controls? just get up!

why do we need cell phones? a pay phone used to be very near by

why do we need prepared foods? you can cook fresh in under an hour

of course we don't NEED any of those things.

but we like them. so we buy them. so someone will sell them.

.... and they will sell us 30-min air delivery, just as soon as they can manage it! (and we will happily buy it.)

NEED is irrelevant.