Loans and Collateral

Bitcoin hit`s new incredible highs, so here is the question. Is Bitcoin a rare Baseball Card, a rare precious metal, maybe a rare diamond ? It`s none of those, so what is making it so valuable ? Can it sustain it`s value ? Exactly what is backing up it`s value ? Is it like a bond that can`t be paid off ? I don`t get it. In my view it is step beyond the otherlyworld and far beyond printing paper money. Anything of value must have something to back it up. Is it just empty space ? Pretty much. If there was a barrier out in space we would have a bubble and if the bubble somehow was popped where would everything scatter to. What would be left except a whole lot of nothing ! That`s just my view. Ask a banker if you could use it as collateral !!