"I do like your Christ. I do not like your Christians - they are so unlike your Christ." -Mahatma Ghandi.
I wish I could remember who said, "I don't have any trouble with God - I just don't like His fan club."
My problem with religion tends to be when the individual practitioners are such that they feel the need to constantly proselytise. When someone feels the need to drag God into the conversation by the heels within the first two minutes, I tend to tune out.
I see Faith as a largely personal matter - I don't care how you worship, and you shouldn't care how I worship. I've never had any trouble with "Orthodox" (lifelong/raised Christians, for instance) like my son's in-laws. Or like some people I've met here. They can keep their faith to themselves, they don't need to haul it into conversations, they don't preach, and they can talk about pretty much anything without dragging God in by the heels. This, I like. I figure about two-thirds of Catholics (in general) and most of your "lifelong" Christians are like this.
The ones that are most irritating to me are "Born-again" Christians and Jehovah's Witnesses - they've got to drag God in at the earliest opportunity. This gets tiresome rapidly.
Jews are great - they don't preach, and they don't have a Hell (probably why they don't preach. I'm not 100% sure of the causal relationship - it may be the other way about.)
Zen, Tao, and Shaolin tend to be more about development of the life now - the first two with the mind, and the last with the mind and body as a unit.
Buddhism follows the teachings of a man (not a Deity,) and simply believe in doing the best you possibly can to help others.
Hindoos tend to be wonderful people (although you often cannot understand them - the Hindi accent takes a little practise...) because they're trying to "climb the ladder" to Brahmin, which is the level from which they ascent to Divinity. But, they don't preach either - they just help where possible, and share what they have. They do expect you to do much the same in return - but when you can, and when you are able.
My wife is Spiritualist/Deist, and I'm more Agnostic than anything else. Granted, she's got friends that are deeply Christian, but they don't preach to us (I just have to be careful not to swear when I smack myself in the thumb with a hammer while I'm working over there. I usually do fairly well...) that last point before the parenthetical note is why we get along so well - we know they're Christian, they know we're not, and we'll talk about pretty much anything else. Ditto my son's in-laws - they're primarily Ukrainian, therefore Orthodox, but they know we're not - as long as we respect their beliefs, they'll respect ours. We'll bow our heads and be quiet while they're praying over dinner if we're over there, we'll stay nice and civil while we're there, and we'll talk about pretty much everything except religion. Works neatly.
Considering they and their daughter have even managed to civilise our older son (he's even going to church with them on Sundays!) it's not necessarily a bad thing. And, they're damned solid people in their own right.
"Catholic - doesn't matter what you do, as long as you tell someone."
"Baptist - doesn't matter what they dunk you in, as long as you go under."
