Re teachers of German going to Germany to take care of old folks, I do know 4 cases. All of them are women in their fifties so get back on earth!
What does their age have to do with getting a job where German is required? Of course, being such an expert, you should realise that these women probably took early retirement from teaching and didn't lose their jobs at all - despite what they might have told the stupid foreigner.
Have you ever heard that it is very hard to be hired (not only in Poland but everywhere else) when you reach a "certain" age. Sorry but when you are in your fifties or older and you have no connections, forget about getting a job and many older Polish women have to go abroad to take cleaning/elderly caring jobs. I do know several women who have left for Germany, England, France (most cleaning ladies there are Polish) or even Italy.
If you reach the age of 50 and don't have connections, what have you been doing with your life? Teachers in particular are very well placed to have connections.
Sorry, but I think your whole "I have so much money and everyone else doesn't" is just the typical arrogant foreigner syndrome. I assure you that you're probably not anywhere near as wealthy in Poland as you think you are.