Hey 8 Year old, I'm pretty sure Minecraft wasn't exactly 'designed' for kids, but kids make up most of the fan base so Mojang won't be complaining. I'm just going to say here that I too am young, and just going on Kids suck at building because, well, I've seen so many bad builds by them. And I said 'MOST' kids suck at building. I even said there was a small exception that can build/detail/terraform greatly.
Anyways, if you build better than me go check out my rollercoaster I don't post to PMC though, because most builds are on servers.
Go learn to spell and proof-read before you start an argument with me. I'm just saying that sounding like a young child won't help you when quarreling with someone over the internet.