Q: Is it better to retire at 42 years old with 22 years of service ($2,900 a month), or go for 30 years and be 50 years old ($5,200 a month)? I feel it would be smarter to retire at 42; it would allow me to start another career. A: As far as this site is concerned, you’ve come to the Department of Unanswerable Questions. Only you can decide what makes better sense, always keeping in mind that the future is unknowable. What might seem like a good decision now might not look as good somewhere down the road. What…