i think i am to old for playing but i still like to play sometime...
Its very sad you think this way... I'm 53 and love playing MC, My Father was creative and was always creating things in his Shed, my Brother loves Painting Landscapes and Abstract Art,
I look at playing Minecraft in exactly the same way even though its a virtual creativity, it is still an expression... just like an Artist with their Canvas in the Meadows Painting Hills and Flowers, so be you the same, evoking your unlimited imagination.
PS: I started playing back in about 2011, It was when i saw a Timelapse video of some Guys building the Ziggurat of Ur, and also the Star Trek Enterprise Video, that's what got me playing Minecraft.