I have been semi retired for 14 years now i love it, work when i want, normally do about 20 hours a week, but if needed i can work 50

my brother in law retired from the police last week, 27 years in ( a few in the army before that, which also counted to his pension ) he is looking forward to sitting on his arse all day watching sky sports and going to florida every year, personally, i am worried for him, he will just slowly die in his armchair a waste imho