Bruh, your really trying to pull the "username card" when your name is cac mamba
im asking you why you called out mine first 
Why wouldn't GOD merk the devil if he cared about his influence on the children. Good question. You see, we living life right now aren't we?
Whats the meaning of life bruh? What is the meaning of life thru GOD's eyes is a better question. He just wants up to live righteous/etc/blah blah blah
Or in your words, live like Disney characters
You know that GOD knows all already. What you are doing is questioning his methods with no knowledge on anything. You have to prove yourself worthy to enter his kingdom. How do you prove it? You already know that answer.
So then, why not get rid of the devil. Well, then you wouldn't have to prove yourself if there wasn't any temptations. In terms of Tomb Raider, if what you suggest was how it is, then once Laura lands on the island they'll all get together and eat Marshmellows til the rescue plane came and landed safely
What you want is for GOD to appear and be like "Yo cac mamba... I'm here to serve you" when its the other way around. He's GOD, hello

Now your upset about this, so you say its make believe because you never took the time to have his grace shine upon you. Saying you have is one thing, actually doing it is a completely different thing. Most ppl don't do the things they say. Now if you put some real thought into this, maybe you'd realize that they say GOD is the creator of all things. That would include the devil too now wouldn't it

Maybe, just maybe... the "devil" is a necessary evil

Don't let the "horrors" of the world make you then be like "Ok, I give in because GOD didn't make this easy"
Its not supposed to be bruh...