The prodigal son

Of the few Bible tales I've ever been told, the prodigal son's always seemed full of bullshit to me. So the father celebrates the return of his lost son? Sure, so far it makes sense. But then he passes judgement on his other son's resentment? Hell - all he did was to reward ingratitude and to punish loyalty. All he said to his so-called prodigal son was "you can do whatever you like, I'll always be here to help you out and toss you a party - your brother will always do the work, so you can have your fun". As we say here, God told us to forgive the others, not to fool ourselves. I hope that the prodigal son's brother has at least kicked him in the nuts.