Well it surely would be easier to deal with (we think) if we can find a reason for something to happen to us. Just like those who are abused feel that if they can take responsibility, then they have a reason they can understand (I should have...I shouldn't have) yet it isn't true. No one "deserves" to be hurt or in pain.
You've heard the phrase "s***t happens" and that applies to this exactly. It means that, without blame, without cause, without reason ... bad things do just happen. It's like accidents...they're called accidents for a reason.
Are there mitigating circumstances we can look at and say, if only? Sure, but just by living we subject ourselves to things just "happening." That's the root of the word: happenstance.
But I also look at the good energy available to us, which counters the negative bad stuff that happens. Draw on that good energy, and find some relief.