Well, something is either positive, or it isn't. We can add up the positives and negatives and see which outweighs the other.
If you approach it that way, perhaps. But not all things are 100 percent positive nor 100 percent negative (or good/bad, right/wrong, and so on)--context, perspective, etc., certainly hold sway in our understanding. Some things are both good and bad at the same time, but in different ways
For a person who holds that family honor is of paramount importance, killing a family member who brings dishonor to the family is a good thing; you and I may disagree, but what exactly makes OUR perspective the right one? (and yes, I can think of several things, what I'm pointing out here is that TO THAT INDIVIDUAL within the context of their society, the things WE value are not the things she/he values)--and good/bad, positive/negative are VALUES and not facts.
Some people in the West think that suicide in any form is bad. For others, suicide is good, because it allows the individual to exercise control over their life, especially to end the ongoing agony of a terminal illness, for example. Sometimes dying is good, sometimes it is bad.
Religion can encourage social solidarity--which can be a good thing in moderation, but a bad thing if in extreme--but there are others who will say that any attempt to impose social solidarity on individuals is wrong, and others who see social solidarity over individual freedom as the preferred value.
State another way, with an individual instead of a societal focus, religion can discourage individual freedom and expression--which some might feel to be a very good thing, even in the extreme, whereas others will think that some reduction in individual freedom to help solidify society is a good thing, and they might join with those others who think that NOTHING should ever interfere with individual freedom to oppose those extremists who wish to do away with all individual freedom. It's all a matter of values, which are often not binary, yes/no, good/bad, positive/negative.