Let's throw some seriously internet angering opinions out there and get downvoted to hell, eh?
Firstly, I'd like to state that I'm not religious and when I was a teenager at the local farmer's market, I've had to walk away from someone trying to convince me to go to their church so as to not break out laughing in their face. I had issues with religion then, and I still do, but those issues have shifted.
Growing up, I had a number of family members (thankfully never those I lived with full-time) try to pressure religion (specifically Christianity) on me for many years. It got to the point where my aunt outright called me stupid at 9 years old for 'believing in evolution.' That was my first big fuck you from religion. Being a strong willed kid, I told myself she was being a bitch, couldn't believe she was willing to call her nephew stupid and distanced myself further from such things. Being raised by a dirty comedian will help one to think this way.
My father, who had custody of me every other weekend, would take me to church with him most Sundays and when he was good about it, he was a great dad. When he strayed from his church-going, his desire to be involved with my upbringing was drastically reduced. At the time, I saw this as him being weak. He couldn't bother to be a good father unless he was walking the straight line his church helped him set.
And then there's my grandmother. She's sweet, but she's weird as hell. Her beliefs are all over the board, and it's certainly interesting to talk about religion with the woman if you've ever got time to kill and a mind open for discussion without dismissal of anything. And I do mean anything. This woman believes Jesus was an alien. Though, she's also fairly old and has been a bit out of touch with reality for as long as I can remember. Again, interesting discussons. lol
Back to my aunt. She loved to tout herself as a good Christian and all that, but then she let her husband beat her kids and her, and she beat them too. Then she had the balls to call my mom and step-father bad parents because they didn't take me to church or practice religion. I was certainly never beaten. Nor myself or my brother grew up with hatred toward anyone and we're generally pretty good people. Bit of road rage here or there, but it's Southern California, if you never get road rage here, you're a more evolved human being than most. Her children (my cousins) all eventually ran away from home, one didn't graduate high school, and one had a number of issues with the law. The one who turned out best was the one who ran away and his grades in high school improved over that period of him staying elsewhere. Go figure.
So my views were pretty solidified for a long time. My father left the picture for many years and re-entered when he found out I was getting married. He had become a far more devout Christian in that time and I actually worked with him a little picking up some extra cash after my son was born. Working with him afforded us a lot of time to get to know each other again, and I can honestly say, I think Christianity is a useful practice - for him. I learned that he can and has had real mean streaks. And his upbringing sucked. I can see where his issues came from, and I can see how being a good Christian keeps him from crossing a lot of lines. He doesn't have much in the way of a moral compass without the help of his beliefs and now that I know that works for him, I can't blame him for it. He's not the weak man I once thought he was. Instead, he's found that he can't keep himself in check on his own.
I don't outright think religion or religious beliefs are bad. But organized religion can be dangerous, as can blindly following a faith without ever questioning why or what it does for you as a person? Will I ever attend church again? Probably not. But I don't outight condemn those who do. I just have to remind my father from time to time that I have no interest in pursuing his beliefs. Conversion rate will be low. The Christian bible does have things worth teachnig, just so long as people, especially children, aren't forced into believing what it says.
So while it's a bit odd that Minecraft is being used to convey the Christian bible, it's not necessarily a bad thing. It's all in how religious beliefs are shared. And if it isn't forceful and disrespectful, I don't see much issue.
TL;DR: I won't ever be a Christian or a terribly religious person, because of the shitty circumstances I experienced growing up. However, I see the value in religious beliefs for some people. This book isn't all that terrible. Claiming so is like claiming that penises are the cause of rape. Damaged people do damaged things. The tools aren't the cause, just the means of execution.