yeah, actually. it's actually for the enjoyment of the user. it's like 'oh, i've this gadget that does this at a push of a button' but you rarely use it anywy.
but it gives the manufacturer (certain innovative people in the industry) to think of something, to innovate, to actually giving a new edge to technology so it will lead to something more useful like for example the taken-for-granted portable dry cells that we use today, are actually an aerospace technology back when neil armstrong set his foot on the moon.
but it is true that the new techs are most probably because the crazy-about-money guys back at boardroom come up so that we'll buy new things and make them rich.
so, be sure on what you really need and use before you buy something.