Well the adultery question is one that can lead to massive debate with people and a lot of very conflicting opinions!!
So........I'll just say with that one.........I'd judge each case separately, bearing in mind all the circumstances.............and there may not be a "right" or "wrong" answer to that in every case.............it can be open to personal opinion.

Otherwise..........good people doing bad things...........again I'd say it can be a case by case thing and there can be as many different reasons as there are answers...........and unless it's really clear why, or we're up-close and personal to the situation we might never know all the contributing factors...........sometimes not even then..........
Some reasons though could be...........adverse personal experiences, having negative influences or factors in their lives, the effects of anxiety/stress/frustration/anger/depression, not having enough coping resources, misinterpreting situations, substance abuse or mental health issues (not saying that even the majority of people with these issues are going to do bad things though!!!)............and there will be loads more..........but sometimes even the best people are going to screw up from time to time (depending on the definition of "bad").............

But..........it's the fact that you're so bothered by this that's the biggest issue right now, yes??
Is it that you don't know how fully you can trust those around you, you're worried about unpredictability or things happening out of your control that could hurt you, you're worried about how fragile "goodness" can be, you feel the world can be a "scary" place, you're worried about how well you can "read" people..........???

Because some things you can defend yourself from, reduce possible hurt, or avoid finding yourself in the middle of............especially if you know that person well, and there are signs, and you know what to look for...........not always but...........and sometimes when you find out the specific reason that person has done something and if you can truely understand it/empathise they/it may not seem as bad as it first seemed.........sometimes...........
Some things are always going to be bad...........others..........maybe not so bad.......

Just some thoughts..............



Alison