as of now, i cant think of any valid reason that bitcoin will be gone. although bitcon can be banned or loose its value due to some factors like for example if  a bitcoin was banned on some country because their government thinks that bitcoin is the root of all evil and greed then it can greatly affect to the market of bitcoin because the demand will be lesser and as a result bitcoin can loose its value but bitcoin cant be gone as long as there were still some country and people who are using it. however there were some news that says bitcoin is a bubble and it will pop soon but it is not yet proven or guaranteed that itll happen.