Well first i wanna say that yeah, i'm Christian.
In some ways i can say that i'm strong in my faith, in a way that i never use 'His name in vain', like 'oh my God' and all that, i refrain from saying it. On the other hand, I do swear a lot, it's just part of my nature. I do believe that by saying 'fuck' is less of a sin than saying things like that.
Another point that should be said is that by being a Christian, nobody in this earth is a perfect being. Everyone does things that they shouldn't do, whether it be intentional or not. I listen to all sorts of music, including black metal (not a lot though, but that's only because i don't prefer the style as much as others, in the same way that i don't like most classical music) - this is because i can accept the views of others. If a band wants to display their anti-Christian or pagan views, they can do that, i'm not gonna stop them. It's their choice.
Some Christians, like the ones you see on many websites, basically point out that you are blind and ignorant if you do not believe in Jesus as your saviour. It is an extremely jaded (is that the right word?) opinion and does not give Christianity a good name - i am not a superior being, nor is any other person who believes in God.
The bible does seem extremely unbelievable at many, countless times (raising people from the dead, creating the world, including man in 7 days, etc.). It should not be taken so literally. Like a song, the bible is often written in poetry. The book of Genesis says that each day for seven days, 'God created the heavens and the earth', blah blah. This is obviously impossible. It is never really said how long each 'day' is. For all we know, each day could be several billion years, letting the processes of evolution to take place. I believe that God was more a catalyst for this chain of events, rather than a direct 'sculpturer', or whatever you wannacall it. The bible relies very often on symbolism, it is not a story book told in black and white.
'White' metal or Christian metal is often looked down upon by some because of what the metal culture is...usually directed at the darker sides of life, and that Christian metal should not be done because of it's totally opposite view on life, therefore people think that it cannot be true metal. However, the bible even says that we should 'praise God with loud shouts and cymbals' (not a direct quote, can't remember the exact line). Christian metal is another culture. Sure it copies the style, but isn't that how all music evolves? A new genre is often created because they take a certain style of music, but totally change a certain aspect of it. No matter how much you might not like it, nu metal came about because of heavy metal, they co-exist because they both have similarities. Christian metal simply has the sound of other styles of metal but usually have a lighter perspective on the lyrics. It can still be dark and gothic, but dark does not necessarily mean evil.
Just thought i'd take this opportunity to write down my views. I'm not an expert who knows everything about Christianity, but these are my interpretations of what i believe.
Edit: added a few things and just thought i'd add to this, if there's one thing in this world that i'm opposed to, it's conservatism. I got told off by some old guy in my church for simply playing a riff that was in a minor key. some people just dont understand...