A much higher standard of living for your children.
Homework? Kids in Poland don't have much in the way of homework until they leave primary school, so that's 12 years of their life missed out on.
Sports? Don't be silly, maybe a couple of days a week, but that's it. And anyway, small kids won't be doing sports, and that's the most important time for the father to be around.
Anyway, I can see you're not very knowledgeable about Polish affairs - because - if you were, you'd know that the best schools aren't in the suburbs. I have a friend who lived in the city centre as a kid - when it came to high school, the best three high schools in the city were all within 10 minutes walk. If she lived in the suburbs, she'd have a nightmarish commute - especially as schools here don't follow the Anglophone model of being from 9 till 3 (for instance).
Inner city living aint pretty, when growing up.
Actually, in Poland - inner city living is much more desirable from an opportunity/education point of view for kids. There's **** all to do in the suburbs here, even worse than in the UK/Ireland. I know one example in Poznan of a very wealthy suburb, yet you must go to Poznan to do everything - there is literally nothing there, except forests and houses.