Have you ever just set and wondered WHY?

is there really a god, if so y r we here? y is everything he made for us that we enjoy or thats pleasurable mostly bad 4 us? why/how did satan get in the garden of eden? why did god put the tree there if he didnt want them 2 eat from it? why do he test us? why not just make us all perfect in the beginning? why why why did he live us so clueless