Hello, this is my first actual post, but this is a cool discussion, I had to join in!
This is something I've been thinking a lot about as well, along with considering how I can change my life to do more good in the world.
The great thing about lego is that it's a creative toy. It allows one to use their imagination to create in limitless ways. Creativity and imagination are so important in making the world a better place... can you imagine what the world would be like without them?
I suppose what you have to ask yourself is if lego serves a purpose in your life other than feeding nostalgia. For myself, if I've had a terrible day, and I'm tired, coming home and building a castle helps to take my mind off things for a while. It gives my spirit a chance to renew itself a little bit so that I can keep facing life with optimism and hope. We all need a break, we all need to have some fun sometimes and play.
Now is it worth it to spend thousands of dollars on lego, or more? Not to me, but maybe it is to someone. If I had a thousand dollars to spend on lego, that money would be going toward helping the environment, as that's something I believe in.
Personally, as an artist, lego helps me loosen up and have fun, which feeds my art. I might be daydreaming about little lego trolls and dwarves chasing each other, and in some bizarre, unexplainable way it will inspire me to paint something awesome, just because my brain is having fun.
I guess my advice would be to go out and try to make the world a better place as much as you can. Do some good in the world, and then if you want to play with lego, go ahead.
Anyway, I hope that all wasn't too long or silly!
~Matthew