Junk Technology

Have you noticed that there are so many technology features that put you in double whammy. Firstly you had to pay a premium to have this unproved, untested feature with dubious claims of efficiency/coolness. Secondly they make you spend more and increase the ownership cost of your assets. Essentially they turn out to be a marketing channels that does not serve your interests.
car diagnostics
It is easy to add sensors and technology into anything but does this do any good? Our phones and gadgets are over-loaded with features that we have never used. When will technology stop being a tick in a check-box of a comparison sheet and start playing a vital role. To me a useful technology is one that boosts productivity and reduces wastage. Am I asking too much?