You get used to it Dmac.
Makes me appreciate my wife and home that much more when you see the dysfunctional lifes that some people lead.
And I wouldn't blame all problems on parenting. Sometimes you can do everything in your power to help someone, but then someone else comes along and leads them astray, I think a lot of it can come down to pier pressure, and also a lack of will power on that persons behalf.
I could give a thousand examples, some as recent as the weekend to reaffirm my opinion, but I am sure you would get bored of me (if you haven't already!)