By joining in it adoption, accepting it for legal payment, giving it to others and teaching others on how to ise bitcoin in this challenging economy downtown, we build the network by encouraging others to understand the protocol upon which bitcoin is built, the network also remain sustainable as long as the consensus remains permanent with everyone adherence to these same protocols about bitcoin and blockchain.
Why should they, there must always be a demand for it and the supply also must be well available for the suitability of the market, because demand and supply is what engenders the bitcoin price since what we are dealing here is a digital decentralized currency which is volatile.