I loved the movie although I agree with the other reviews. I had expected Jack Nicholson to "jump out of a box" but he played a straight part, one I thought was excellent!
My biggest takeaway was what it is really like to retire. The company that you worked for many years truly could care less about you after you retire. Nobody left in the company will be there to push you around in a wheel chair or help you with medical appointments.
The movie was a real eye-opener for me and I am very appreciative I had a chance to see it before my 3 different retirements.