Perhaps not grumpy yet, but there have been moments. And, my youthful thoughts of dedicating my retirement to wine and women in thongs just isn't working out. Not having a job is affecting me more than I imagined, though unemployed/under-employed is the nature of writing military technical manuals. I've certainly enough interests (photography, music, motorcycle/bicycle, guns, bible study) to keep me busy, but the continuous motivation is difficult to maintain.
A recent discovery has helped. It seems that several universities (Yale, Princeton, and others) and educational websites (TED) offer free entry level, college lectures and symposiums . These have sparked my imagination and hopefully maintaining my mental agility above the level of bingo.
It's going ot be interesting to see how this plays out.