If loud, obnoxious know-it-alls could truly keep us from God, then God wouldn't have made any loud, obnoxious know-it-alls. Yet here we all are.
Don't give up so soon.
Like you, I don't find any peace listening to people at church (or anywhere, really, but it seems that your problem is at church) tell me that I should do this, or do that. Or this is true, and then that is true. Sure, they're of one mind during the liturgy, but outside? Forget about it! No way. They'll even argue amongst themselves for diametrically opposed points of view regarding everything from scripture to the saints to God until somebody gets tired of yelling and finally just asks Father what he thinks (at which point the conversation is generally considered to be over, thank God, because we respect our priests way more than each other). If I had to judge Orthodoxy by what goes on over the agape meal, I'd probably come away with all kinds of crazy impressions. I certainly wouldn't come away with the idea that I should be Orthodox.
But again, in the liturgy, none of that matters. We come together, not yelling at each other, but praising God with one voice. If we could carry that over to all other aspects of Church and life and never waver in it, then we'd already be in heaven. My only advice is that finding God and finding a bunch of clanging cymbals are not mutually exclusive situations. They're both in the Church. Your job is to bear one for the sake of the other.
"I, therefore, the prisoner of the Lord, beseech you to walk worthy of the calling with which you were called, with all lowliness and gentleness, with longsuffering, bearing with one another in love, endeavoring to keep the unity of the Spirit in the bond of peace. There is one body and one Spirit, just as you were called in one hope of your calling; one Lord, one faith, one baptism; one God and Father of all, who is above all, and through all, and in you all." (Ephesians 4:1-6)