Nope. It's mostly free. You just have to purchase the game to play the full version.
Yes you can, the demo just has a time limit.
It depends. All electronics can be misused. Minecraft can be unhealthy if that's all you do. Just limit your time on it.
There is no time limit and the average professional career is approximately 6 years.
I don't think you can. All you have to do is not die and play for a long time on the server that you want to get the faction power on.
Yes, of course! Minecraft is a game for all ages, and people of any age play all the time.
There isn't an official time limit, but they know that they are there to play baseball. If a runner is taking too long to circle the bases, the umpire will speed it up.
Yes. If you have Mac; I'm not entirely sure. The only time Notch let the free public play minecraft was Survival test, and that was long ago.
The next time you play Minecraft, if you are connected to the internet, Minecraft will automatically download it.
infinite
Night time is seven minutes long
No. The PC and Xbox Minecraft are in 2 different versions. Minecraft on the PC has blocks and mobs that just don't exist in the Xbox version. Xbox may eventually catch up to PC although it is unlikely that it will happen any time soon.
You can. What are you talking about? I play on different servers all the time.