Bitcoin for some people worth the risk they took,going full at bitcoin,i would consider it if had no family under me,soo its better to let bitcoin as an extra income .
if you can earning more than realjob why not..? the future of bitcoin is very greatfull, if goverment adopt bitcoin technology each people will interesting to use it and we will see new digital era.
even if you are earning more from your day job there is nothing saying you can not switch to bitcoin. you can start accepting bitcoin as payment if the business is yours or if you are receiving a salary you can ask for it in bitcoin form or even buy bitcoin as soon as you receive it.