Why is there sin and evil in the world?

That's a good question, and there is no 'right' answer. It depends a lot on your definition of "sin" and "evil". In some ways, we only have the concept of "sin" because organized religion needs something to fight against. If you have no 'sin' to be afraid of, then you have no need for organized religion, which puts all the priests and rabbis and mullahs out of business, and they'd have to get real jobs like you and me. The broader your definition of "sin", the more of it there will be in the world. Same with "evil"

• they really occupie the same spot, philosophically. Was Hitler

evil? Sure, probably, 99.9% of humanity would agree with that statement. Is Ozzie Osborne evil? Well, you might not get quite the consensus there. Dopey, yes. Evil?..probably not. You could probably find a good number of nutcakes who think Hanna Montana is evil...so there is no straightforward definition of it. We all have to make that choice and that determination ourselves. So one person's "sin" is another persons "pleasure" - in fact, many of the sins we're warned about from the pulpit involve having fun. The seven deadly sins, especially lust and gluttony, are some of my own personal favorites. The problem with 'sin', per se, is that many religions say , "you always sin. Nearly everything you do is a sin. But if you come to us, and promise not to do it any more, and contribute a nice check to the church, we'll have a heart-to-heart with God and see to it that you get into heaven anyway. So to them, sinning is fine, as long as you beg forgiveness.