I recently had my site suspended from Adwords after five years advertising.
Truth be told, I never had great success with it, a majority of my sales coming from referral and organic traffic. But I was always minded to persist with it to lower the impact risk of my other channels being blocked.
However, this ban will just create more work for me. Google sent me a very general huge long list of things I-may-or-may-not-have-done-wrong... I've found a few things I'm probably not 100% on but I really have a lot of other pressing things to do.
I just hope they don't start lowering my organic ranking. I was interested in trying remarketing but this has probably stopped that.
Andy - thanks for your advice on Adwords down the years. Early doors, I implemented your basic suggestions (stop traffic from certain countries etc) and all your advice worked nicely.