Sure, if you can ensure that you'll do that for your entire career and that you'll never be in a position where vulnerability has made you (perceptually or othe

Sure, if you can ensure that you'll do that for your entire career and that you'll never be in a position where vulnerability has made you (perceptually or otherwise) a weaker candidate than your rival for a particular job, contract, or promotion. The calculus is simple: do you gain more in your career by openly sharing everything, or by holding in reserve that which doesn't need to be shared? It is always - always - to your benefit to be the advantaged party in any relationship with an information asymmetry. By over-sharing or not exercising discretion, you are voluntarily putting yourself in the disadvantaged position and should reasonably expect that position to be exploited by others around you at some point. If you can avoid ever needing to transact with anyone that would exploit that asymmetry, more power to you. I'd wager that exceptionally few people have that luxury.