Why do some people always try to deflect the blame of their actions/behavior/mistakes onto someone else?

Brainsbeforebeauty
Why do some people always try to deflect the blame of their actions/behavior/mistakes onto someone else?
We are all human. "To human is to error".
It's not always the mistakes people make I have issue with.
It's when people try to deflect/blame someone else instead of admitting/taking the blame for their actions or mistakes.
In my 47 years I've made plenty of mistakes that I will admit to, take responsibility for. I will not however take the responsibility or blame for someone else's mistakes.
And, there are some things in any relationship that can be forgiven.
But to work past it and salvage the relationship, well that can't happen if someone won't admit or take responsibility for their wrongdoing. That's bad enough.
But to turn around and try to blame the other person, that's so wrong If you consider yourself grown or an Adult, be "grown" or 'adult" enough to own up to your mistakes.
Why do some people always try to deflect the blame of their actions/behavior/mistakes onto someone else?
17 Opinion