How Much Will Bitcoin be Worth in the Year 2140?

Too Long; Didn't Read

Some people call Gold a finite commodity but why not other commodities which are finite too? Is it because of its uniqueness, attractiveness, defines wealth & class and most importantly hedges against inflation making it more significant than other commodities? Will it be more valuable than we have on Earth keeping mining costs aside? Will people prefer buying more of the Gold which is mined on Mars over Earth? If it is a commodity to hedge against inflation with limited supply then people will keep holding as much as they can, with the anticipation of future gains, Will this make bitcoin a Ponzi?