I will actually HAPPILY increase my retirement age: when employers stop firing engineers over the age of 55 and replacing them with college grads. I'm happy to

I will actually HAPPILY increase my retirement age: when employers stop firing engineers over the age of 55 and replacing them with college grads. I'm happy to work until 72 or even 75. I have a pretty generous vacation allowance, so I'm not feeling the "rat race" in that way anymore. What I'm feeling is the creeping dread as I approach 50, that I'm going to be rightsized.