Minecraft is one of the things I like least on the Internet right now. It epitomises everything I dislike about the environment given to the young generation, their imaginations torn from them, pushed into building artificial worlds because making in the real one is hampered by a perfect storm of regulation and fear under the umbrella of crony capitalism.
I'm sorry that your children don't get to build their own meth lab.
No, actually, that's pretty close to the non-snarky truth. I was an avid chemistry hobbyist as a kid. Already in the 1970s it was getting harder to obtain some of the materials I wanted -- all the 1950's "chemical magic" books said to go to your pharmacy for nitric acid or carbon tetrachloride or white phosphorus, but the pharmacy was having none of that. Fortunately, I had science teachers who wanted to encourage my enthusiasm, and they arranged for me to order stuff through the schools. I managed not to do too much damage to the house, the environment, or my health.
Today? Schools and pharmacies are even more locked down, but now we've got search engines and e-commerce. On balance, it's probably easier to get stuff than it used to be. But with "chemistry sets" disappearing from the shelves, fewer kids are ever getting started in the hobby.
As for having "their imaginations torn from them", though, I think you're still way off-base. My kid spends a good bit of time on Minecraft and related online pursuits, but they still haven't come for her hot-glue gun, and her tower of miniature houses, characters, and gadgets continues to grow steadily. So do the stories that she's writing, both alone and in collaboration with former classmates. It would be cool if she took after chemistry or electronics like I did, I guess, but those aren't the only fields in which to become a maker.