I disagree with you to say that many organised religions are bad. I view religious organisations, such as the Catholic Church, more like a club. For example, someone wishs to do sport, art etc. they have two main options - (1) Join a soccer, GAA club, etc. where they are with people who play the same sport together and are distinct members and follow rules ,or, - (2) Do the hobby on their own or with their friends casually where there is no organisation, membership and rules.
This example is like anyone can have religion in two main ways - (1) An organised religious system where people believe and worship the same things, where there are rules, doctrines, texts, government/leader(s), etc. or (2) Where people have their own personal beliefs but there are no set laws, doctrines, leaders, etc. (i.e. unorganised religion).
I think religions need to have some sort of governing, like a club, but democratic or they will fall apart but I don't think they should have any control with a country or state as they're not the only religion and their beliefs should not be enforced upon individuals. I like a religion where people can have more variety in beliefs(options) and are able to accept each other's beliefs.
I'm a part of a religion called Unitarian Universalism but it's different than most other organised religions as it teaches that nearly every religion in the world(including paganism) has something to offer mankind so many people belief in different things including humanism and there is a democratic commitee which is elected by every member of that religion. We pray together once a week in covenent where different topics are discussed which help people to form there own beliefs and be more aware of the world around them.
And on a lasting note. Many wars and violence haven't occured and occur due to religion but for some other reason and religion is the excuse given to hide that reason. For example, Protestant versus Catholic in the North and Reformation and some people said and say thay hate Jews because Jews say that they're God's Chosen People, Christians and Muslims also say they're Chosen too.
If you say organised religions do more harm than good, then you could say that about anything.