Does "spiritual warfare" exist? I think anyone who has given himself over to the leading of the Holy Spirit knows that it does and is conscious on some level of the daily need to be watchful for those moments that trip us up and result in the chaos of our lives.
Can we blame "spiritual warfare" for all the negative impacts on our lives? Not all, certainly some, but there is one point we must take responsibility for.
We must, in most cases, allow ourselves to be swayed, lead, moved to acts of personal destruction. We must take responsibility for being sideswiped.
It is on me to say alert, to be watchful, to continue the righteous walk.