Sorry for my absence - busy times.
Grimma, and Hima, of course you can think of each life as precious in itself, and of course that can work - and of course it's also the case that people of every faith can fail to act lovingly towards one another. However, a religion of love is part of the history of loving kindness to one another. Think: the Romans had shedloads of slaves, who were often routinely slaughtered when their lord died. This is unimaginable in a xtian world, though of course keeping slaves did happen in some places but NEVER without criticism - by itself paganism didn't and couldn't come up with a cogent critique of slavery itself.
Yes, Grimma - I specifically said love in this sense is not an emotion at all. Love is an act, not a feeling. The whole point of making it a law is that you have to behave lovingly to people whether or not you feel affection, and no way would I express that by producing boak-inducing displays of faux-feelings over some stranger. \part of kindness/love is tact. 
In exactly the same way, when people say they love god, they don't mean that they well up for him as if he was a cute cuddly lamb. Yes, exactly Grimma - the good samaritan is def. a keeper, whether or not you buy anything else in the NT - you love god BY loving each other. If we really try to do this, I honestly can't see how it can be harmful, and if I'm deluded, ok - I can't prove I'm not, though of course I don't think I am, but if it does a few old ladies crossing roads some good, ok.
Btw, headinhands, I'm not trying to defend every single individual OR xty collectively - just explaining my own pov.
Now to the curly qn of the truth of scripture... it just seems to me that there is a big generic difference between the OT and most of the NT. The NT is so much more, well, realist, largely involving believable conversations and only a sprinkling of supernatural events, almost all of them kindnesses - healing, feeding. By contrast, the OT seems laden with narratives that work - if they do work - like folklore - containing some wisdom, but often using narratives very alien to the way we see the world now, after Rome, after humanism. That's why I don't think we need to chuck out the 'good' bits of the NT with the bears. But some parts of the OT are absolutely rich and resonant too - try the Song of Songs... marriage and sex and the longing for god.