Bitcoin is the most famous and the no one crypto currency today. It hold the highest market cap in crypto industry. Also it use very advanced and secured technology, Block chain to operate. Lots of people's use bitcoin as a investment factor. This cause to maximize the capital of Bitcoin. But how long Bitcoin will survive in this industry ? Because lot's of government try to manipulate and control the crypto currency industry via introducing new regulation. As a country some one can do vast harm to bitcoin. We saw some of in past. If Bitcoin fail in this industry it will be a biggest financial crisis in this century.     
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For me I don't know how long it be but hoping that it will last forever because this is the only way I earned money to support my needs especially in school and helps my parent also.