Fair enough. Only you know your age, how you feel, what doctors have said to you. If you have a clean bill of health and no known disease history in your family then you really should be guided by actuarial studies which on balance may put you in the 80-90 range. Perhaps you need to find a 50/50 split between your dream job and one that better supplements income so you don't feel like you are falling behind - if that's the feeling. All the best 👍🏻