Having a mom who works for a cleaning company (ironically Molly Maid), I hear about all kinds of horror stories about how bad houses can be. My mom is very professional about it and isn't one to complain to people directly about these things. I think it comes with the territory: once you see some pretty nasty stuff, there isn't much that can really phase you.
That aside, it's incredible to see you taking that massive leap in getting everything organized. I was worried that you were going to try doing all this yourself again since you've mentioned a while back you relapsed to hoarding. I'm sure with the revelations from this organization session you're not going to have to worry too much about this for the future. :)