For the most part, they are (IMO).
I think that God doesn't need a middle man. They (God) speak to us indirectly through natural phenomena (The stars and planets, for example). When they speak through people, there is a chance of corruption through one's ego-self, or the desire for fame and power. This could be why some cult leaders originally had good ideas but later ended up doing horrible things.
But only Zoroastrianism, Judaism, Christianity, Bahai, and Islam are revealed. Even Christianity is questionable because at one point it was a mystery religion and people were called to find God on their own. It was more like a theistic Buddhism than it was the Christianity we see today. We can thank the church for burning all the real Christians and instituting a corrupt organization in their place.
In my experience, God is more than happy to talk to you if you approach them with respect and dignity. Doing that means being kind to the God in the earth, the God in all life, and the God in yourself. Think about it. If someone was really abusive and said all kinds of nasty things to you, would you want to talk to them or avoid them?
This is why, I think, Atheists can't "see" God for themselves. It's not because they believe or don't believe, it's because of what they say and do. (I was raised in an anti-religious household and every atheist I knew was super hateful)
As a Gnostic, I really believe the only way to answer theological questions is to observe spiritual phenomena, reserving judgement and dogma, and come up with an explanation. Not everyone is going to agree, obviously, but our sense of logic and cognitive ability is incredibly weak compared to the vast array of spiritual beings I have encountered. Not everyone is going to understand this.
Many ardent atheists I know are not arrogant but spiritually young. It takes many lifetimes to pull your head out of MEST (Matter, Energy, Space-time) and see the spiritual world. Just as a two-year-old is mentally incapable of understanding calculus, spiritually young people are incapable of understanding spirit.
TL;DR: You need to live many times to answer this question, or any question you have about spirituality. No matter how eloquently someone explains the answer to you, it is unlikely that you will understand or agree because you are likely too spiritually young.