The game is about finding cool shit and surviving nightly monster attacks. This whole "game about nothing" label is a complete disservice.
The monsters aren't exactly smart but when a creeper sneaks up on you in a cave...and all you hear is SSSSSSSSSSS you know your about to get fucked up by a huge explosion.
How bout accidently letting one in because you are messing with your new doors and then hearing SSSSSSSSSSSSSSSS. A lesson I learned all too soon.
Wait till the XBOX version gets updated more then you'll have the monsters that navigate very well. Currently you have the ones that get stuck on walls trying to walk through them to get to you but on the current PC version they will navigate area's including mazes to get to you.
Can't remember what version of MC on PC had more mobs spawning but at one point they actually had to cut back b/c to many mobs were spawning lol.