Is it worth returning to Poland in old age?

That's an issue too.

Years ago there used to be a pollution monitor in Warsaw with a big display. It was near DH Smyk. The council had to take it down because all the displays were pretty well always on red.

Where we are has forest on three sides which helps a bit.

For retirement, perhaps a summer house on the edge of Warsaw but near the metro. Somewhere in the Med for winter.

Because there a big smelly turd polluting that place - Trzaskowski.

Yes, Ziobro.