I've been lurking in this thread and I've decided to put my 2 cents worth in...

At the end of the day you might think you know what they are doing in your own assumption but there is a very good chance your wrong.

My mum is on the pension (she is in her 60's) and after she and my dad separated 12 years ago she was on single parents for my brother.
Now as she is an older mother she had a lot of time to accumulate nice and expensive things before having kids and as she looks after things still looks really nice.
The amount of times people "dobbed" mum in for cheating when she was being completely kosher just because they made an incorrect assumption really makes me furious!!!!!

Noone know what happens in someone elses life unless you are a fly on the wall at all times...
I would mind my own and stay out of it personally - seems we all have enough crap in our own backyards to deal with - without shovelling everyone elses.