If it gives a good assurance for a good source of income then why not, but as of you know bitcoin after a stable job then as should say that maybe bitcoin is a part of mysideline job .But if in long run if it gives you more than your stable job, then maybe I will stay focus on bitcoin and quit for my day job.
if you can get salary from both of them why not?
i think we can use bitcoin as assurance investment for retirement day, then use real salary from daily cost and needs.