I shall now speak from the angle of a Christian on this subject. I'm far from a perfect follower but I still have enough love for it to speak for it.
It was never meant to be forced upon people who chose not to be Christian. It is utterly useless to force anyone who has no love for God to follow anything in the book. It benefits God nothing, it benefits Christians nothing, I'd even go as far as to say its counter-productive to the TRUE goal of christianity.
I believe most things christians should do should reflect the 9 fruits of the spirit: "love, joy, peace, patience, kindness, goodness, faithfulness,gentleness and self-control. Against such things there is no law."
Therefore, with evidence from the bible itself. I, with confidence, can say that mistreating anyone, or making life harder for people because they do not follow his word is NOT right. As it goes against the fruits of peace,patience, and gentleness. There is none of this in oppression.
Jesus said that all of the commandments can be summed up in two: Love God and Love thy neighbor. Pretty much anything THE BIBLE ITSELF says is 'sin' is because it opposes either of these. Therefore, if one doesn't love God, there is no point in forcing the rules on them, and honestly pushes people AWAY from loving God, because instead of remembering the kindness of true Christians, they instead think of fanatics who care more for 'winning' a battle than what God ACTUALLY wants; to establish a relationship based on LOVE, not control, with as many people as possible. I'd dare say some act on pride rather than love for God. but God hates a proud look.
However, these bad, or misled, or well meaning but way off the mark, Christians will always be a problem for Christianity; even the bible itself states that there always has, and always will be false prophets, doctrines and those who add to and take away from his Word. Personally, i beware any who speak more from their head, or about politics, rather than focus on just how beautiful God is.
This is just an extra for those who wanted to know, after reading the commandment summary of love, why is sexuality an issue? I'm not a perfect study, but so far this is the understanding I have developed over the years.
First, I just wish to start off by saying, Man's definition of right and wrong will always be different from Christianity's; whereas man's definition of it is roughly 'what does and doesn't harm the well being of others'. Christianity's definition is again based on the two overarching commandments "Love God" and "Love thy neighbor".
When we look at the homosexuality issue regarding Christianity, the reason it is most likely declared a sin in the bible stems not because it breaks the commandment to love thy neighbor, but "Love God".
In the story of Adam and the garden of Eden, he started off alone... but God realizing that it was bad for him to be so, put Adam into a deep sleep and created Woman from his rib. Essentially, the man/woman relationship was God's first GIFT to humankind. Therefore, to do the opposite is a pretty hard way to reject that first gift. Such rejection can be seen as 'not love'.
Most people at this point now mention the natural biological urge that's been scientifically proven. I'm not a Christian to deny science. Some say 'why did God allow this urge to be possible?'
Well, was it REALLY God that allowed it? Adam and Eve was kicked out the garden because they were tempted into eating the fruit from the tree of Good and Evil. When they ate it, they instantly 'realized' they were naked and made clothes. Now the thing is; man started off 'innocent' but is now capable of evil after eating the fruit, and so were all generations. There's no true proof in what WAY the fruit affected them, if it was merely thoughts then... the knowledge would have stopped with them right? The power of the fruit could have even been reflected by a massive alteration to our genetics and behavior/instincts. I mean, if you're not Christian of course its silly to think a fruit could supernaturally rewrite DNA. but what are things such as time/space to a God if you believe otherwise? 7 days? Billions of years in fast forward.
In the end though, the point still stands, forcing someone to not do something does nothing to bring a soul closer to God, and any self sacrifice a person would make? (yes, to present oneself a living sacrifice does mean 'giving up' parts of yourself.) Must come of love and understanding or else it is pointless, and for the sake of the fruits of peace and patience, would rather that everyone be allowed to go their way by choice just as God has given all of us.