I have pretty much same thoughts on it. when you need to convert again your bitcoin to fiat to spend them for your life's needs, then there is no sense to accept 100% salary in bitcoin and again convert them into fiat for use.
you can accept a small part of your salary i bitcoin because you want to save that.. it would be nice when everything work with bitcoin. every important needs of life would be available to buy with bitcoin. then peoples may consider to accept bitcoin as their salary.
Yes what is the point of having bitcoin as a salary if eventually you will just spend it due to regular spendings like foods, payments, monthly bills etc. Totally no difference at any side.
Work for bitcoin then gained bitcoin. Work in real life job and gained fiat. Used that fiat as your regular spendings and just let your bitcoin earnings saved on the wallet waiting for them to increase in value.