By what criteria are legos better than rocket fuel? You can use rocket fuel to power your lego factory!
a little backstory for ya. when i was little, my brother and dad often made and launched rockets. eventually i tried building one and all was well until i was gluing on the fins. i tried several times, the finale being me sitting there holding the fin on straight and blowing on it for something like 20 minutes. i had seen my dad and brother build dozens of rockets and never have any issues and they were as confused as i was. when that fin slid off the last time, i felt what may have been the purest rage i have ever felt. i've never been one for throwing inanimate objects for not working right (i.e. me sucking) but i was well beyond that. as a result, i came to the conclusion that me and rockets would never work out and it'd be best to just let the big boys build them and watch from afar.
meanwhile, with legos, i could explore space as well as infinite other possibilities in a fraction of the time, cost, and frustration.
:-(
Well I'm glad you found lego. Imagination is a wonderful tool.
read as rocket fuel being included in the question. still thought legos were better.