Interesting point made that we listen to people tell us about God when supposedly we have a personal relationship with Him, but in all fairness, you’re not approaching this with an adequete understanding of Christian doctrine. You can’t bash the way Christians do things without understanding why.
The Christian worldview sees man as follows: designed to be perfect and in communion with God, but given free will (becuase “friendship” with automatons, presumably, wouldn’t mean anything to God) we chose instead to rebel and do things He explicitly told us not to do, and which harm us because they are in contradiction to our own design. (Remember, Christians believe that the same One who designed us gave us our moral code, so the code reflects our own needs as well.)
Since then, in order to know God, we must come to Him not merely as broken or sick people who need healing, but as rebels who need to lay down arms. There is a distance between us and Him that lies partially in the condition of our souls, and partially in the ingrained habits of our thought, behavior, etc.
Christianity holds that the sacrifice of Christ served to pay for our sins and make a return to God possible, but that even after the initial “salvation,” we are not instantly perfect, and therefore cannot instantly have perfect communion with God.
(If you do not agree with these statements, or find them illogical, that’s fine, I’m just explaining Christian doctrine.)
All that being said, it is, then, helpful to hear from others who are traveling the same road, dealing with the same struggles, overcoming the same personal hurdles to better know and serve God. Not only that, but the New Testament concerns in great part the Church and the “fellowship of believers,” even commanding that believers meet and encourage, admonish, teach, and help each other, and join each other in carrying the message of salvation to the rest of the world.
That’s why Christians go to church and listen to a preacher talk about this God they’re supposed to know themselves.
As to whether a personal relationship with God is possible, I say it is first reasonable to define a “person” before saying that God isn’t or couldn’t be one.