Mick can feel he deserves his current benefits, but others can feel burdened by a retirement plan that (in hindsight) was very likely to not be funded to the level needed for its payouts. In a perfect world, Mick would get his monthly check and the current taxpayers would not be asked to fill in a hole while getting reduced services and education in return. In the not perfect world, Mick gets his check and wonders why others are upset.