Lego hadn't been invented I don't think
Voted for taking everything to bits, but I also was an avid fan of Meccano.
I'm in my 50's and have been flying for 28 years after a short career as a LAME, and I still spend a lot of time taking things to bits - once it's in your blood I guess. Although I do really enjoy flying I still get a tremendous amount of satisfaction out of hands on practical work - one day I'll get the hang of it!
By the way I used to have real trouble changing the JT9D-3A stator anti-ice valve actuator as my fingers seemed to be just a little too short (my nickname was 'stumpy'). Anybody else find it difficult?
Regards
Exeng