Long story short, my wife pays $50/mo pre-tax to have me added to her very generous Aetna Choice POS II plan, and I recently changed jobs and am enrolling in benefits etc. Does there seem to be any reason to add my employer's Kaiser PPO HSA 1500 on top of my wife's plan? My employer pays my premiums so there's no cost, but I know that if I enroll in Kaiser they'd have to be my primary so it would negate a lot of the due-at-service OOP cost savings that Aetna provides with their plan. Is there any reason I should sign up for Kaiser too? I don't really understand if there are benefits to doubling up...