I think that it gives a positive effect on children because it makes us notice more about our selves. Children who experience religion are more likely to relate to other people with the same/different religion this can lead to friendship. In my opinion teaching kids about religion makes them less prone to taking drugs and getting themselves into gangs if it is done right.
Religion does give a negative messages to children. Religion secludes children, religion does not allow children to express there true selves or there own opinions because they might not be what is viewed as right in the eyes of their religion. Religion controls a child's life and alters it drastically because they grow up making decisions on what the religion would see fit, not what they, as a person, thinks is right or wrong. This creates a biased opinion and leads to many world wide arguments.
In my experience as a kid. I think restrictions good. You need to remember that there are lots of ways to interpret religion and thus interpret how to address a situation. Religion does in fact makes us relate more to other people with different or the same religious beliefs. The reason why religion restricts kids is because religion as a whole wants kids to think about there decisions carefully. This transfers into adulthood and teenage years of there life. For example if a boy asks a person if he wants to do weed or any other illegal narcotics. The boy who was raised up in an religious environment will have second thoughts because he was told that having illegal narcotics that affect you're body more negatively than positive is a sin and they shouldn't take it, rather than going through logical reasons that the kid might just not remember seconds later. Teaching them that god will punish them WILL and I say WILL make them have second thoughts.
Children are individuals with human rights of their own. Since the earliest times children have suffered the effects of religion, from the conflicts and sacrifices of religions to the fear and guilt of the 'hell fire and damnation' branches of the church. Some children are open to religion at a very young age and by then they can not argue if they wish to partake in it or not, because their peers make that decision. If a child is forced to grow up in a religion they do not accept then at their teenage years, they will rebel and do things against their religion. In many cases if you walk to a religious high school, you will see a bigger group of kids smoking then you would at a public school, and you will hear of the trouble they all get in because of drugs. All these issues are made because it started as a young child's age not accepting the religion, then progresses into the rebellious stage in the teenage years where people are offered more freedom.
In some religions, people support old policies and old laws. In some cases some of these opinions are viewed as a stable healthy point of view, but in other conditions, some older religious opinions are viewed as offensive. This is an issue because those being judged due to old customs of religions are horribly discriminated against. Those supporting their own religion are viewed as bullies, or discriminators, if they can not grow up being restricted and discreet about their religion. I believe children of today practicing some religions are growing up judging and holding on to old customs and not adapting to the growing world. If a child has a strict point a view in a religion, that can cost them friends, jobs, schooling, family. Endless issues come with religion policies.