Sometimes, we make choices that our friends don't understand, or maybe they understand the reasons but simply consider it a bad decision because their considerations aren't subjected to the same constraints present in the same situation.
And sometimes, friends just choose to hear what they want to hear and then form their own conclusion and judgement about your actions. "If I were him/her, I wouldn't have done it this way but hey, it's his/her life." Sure, they're entitled to it, no issues with that.
What's irksome is that they then proceed to share their brilliant sweeping statements with others, picking the juicy parts of a story and leaving out the background or whatever justifications the friend may have had for making such a decision. And you just can't help but feel that it's more for the sake of telling a good story about themselves at the expense of a friend's already depressed emotional state.
They don't realise that, sometimes, not saying anything is infinitely better than saying it for the shitty sake of saying it. But that's another blog altogether.
Sometimes friends just piss you off in ways that they don't realise.