Never too old (41) I game more now than I ever did actually, I didn't game much in my 20s was out at Rave's and clubs caning it and getting s'faced. Got back into it mid 30s when they started trying to kill pubs off (pretty close to succeeding IMO).
To me, far better entertainment found in gaming than TV, and gaming without question is far better now than the misty eyed past of the old Atari, C64 and Speccy days we remember.
Ignore the conventional fools who label everyone and everything, they're the sheeple, they're the morons who can't think for themselves and spend their lives terrified of what others might think, they're the idiots watching adverts for garbage all night.... - as Mark Corrigan would say (rare bit of quality TV) 'I know whose winning!'.
Pretty good evidence about that gaming is actually good for you, certainly doesn't hurt your hand eye co-ordination or memory.