So you don't like the religions that we have but you like the ideas of some of them.
Many people use religion to do just what you described you doing.
To clarify.
I find issues with many of the organized religions. Quite frankly some of their teching are either theologically broken, or they added in rules and regulations that are complete useless and often destructive. I am however a minister in a 'nondenominational' church so don't take this as I'm opposed to 'religion' completely. We try to stick close to the bible and cut away the extra fluff.
Quite frankly, I also find issues with many organized religions. I agree with you there, and I am the son of a minister in a nondenominational church, so I know what you're talking about. However, can you say that religion is bad? Sure, organized religions have severely messed up the world, but is religion itself bad?
Stepping back for a moment, the core idea of most religions (Christianity, Islam, Buddism, Hinduism, etc), sans talk about dieties, is to work on becomming a better individual. What 'better individual' means varies to some extent from group, but the ultimate goal is always to improve yourself. In the case of Christianity, one strives to be a more loving and caring individual. At the same time it teaches a degree of responsibilityover ones self and ones household.
Regardless of if a diety is involved or not (as I said that debate will be saved for another thread, another day), the basic principles of loving ones neighbor, being responsible, etc. show that religion has a great share of merit. Regardless of time or society basic ideals like those will always be a positive for society. So from this perspective religion is a positive influence on society and thus not wholely bad.
Taking it a step further, as much as we'd like to believe people are born inherently good and 'moral' such is not the case. A child is neither moral or amoral, they have no sense of 'right and wrong'. A child learns accepted behaviors and actions from there parents 1st and formost and then from their surroundings. If a child is raised in a society were you kill people who wear red hats, they will follow the social norm and do the same. To them the only moral action is kill the person and sparing them would be unthinkable. Its an extreme example, but there is a large amount of historical presidence supporting this claim. A famous example is kids in the Hitler youth turning in their own parents for acts against the third riech. So yes, people are not inherently good and society needs some entity to hold up a higher moral standard for people to strive toward. As has been the case for thousands of years, religion has stood to take the point as the standard of morals.