Why Bitcoin has to die

Death prophecies on Bitcoin are as old as Bitcoin itself. But the further the development goes and the more bitcoins are mined, the merrier my view becomes: Bitcoin has to die.
It’s not that I’m a pessimist or hater on Bitcoin. I do admit it was (or probably still is) a great development. To make a blockchain somewhat failsafe, create the whole system to be trustworthy, establish a allocating method which is somewhat fair - at least it won’t stop people from investing. It’s a great piece of tech, not perfect of course, but a huge step.
Economically it will fail.

Usually the technology which is wasting the least amount of ressources win - the most efficient technology to effectively solve a issue.
Bitcoin is neither efficient nor effective. And this should cause it’s decline.
Efficiency is the input needed to fulfill a specific task. I don’t need to explain why huge mining pools using expensive graphic processors to randomly generating nonces and checking if the hash function is valid is a huge waste of resources. It consumes power, needs investment and it’s just a poor method to calculate terms that don’t have any use. This computing power is actually not even useful for the blockchain itself.
It could be done much easier and more efficient without a “proof of work”.
Efficacy is the ability to get a job done. And though the lightning network is in charge now bitcoin is still a somewhat poor currency - and it might never chance.
A lot has been written on this already, so in short it’s the functions of money which are violated by bitcoin. It’s not a medium of exchange (yet), it isn’t a store of value (volatility!) and neither it’s a unit of account. Together with it’s deflationary caracter and the usual obsolescence of technology bitcoin has to die.
Like with all living it’s rather the questions when and how it will sink, and what it will do in its lifespan.