i dont understand why bitcoin has to be just base on people perceive value of it. and for someone to just artrarily fix the supply of them at 21 million doesn't make any sense. it should be able to contract and expand the # of bitcoins in existence. but because bitcoin is design very simplistically it is kind of like monopoly money. not backed up by anything.
Your proposing that bitcoin should be backed just like the USDT that is supposedly rumored to be backed with $ and also pegged as such. Then, it would would sense or have a real value to it right, @OP.
Why should a currency be backed by another currency? Fiat currencies are backed by the CB which are saddlers with the responsibility of its printing and as such, could bring about inflation and vice versa in a nation. Now, bitcoin have got non of that but is capped at 21million and the fact that no one can alter it being a complety decentralised currency it what makes for its uniqueness and differentiates it from other currencies out there. It puts the power in the peoples hands. Except you don't like it then, you could settle with fiat currencies. It's simply choice.