/ Will Poland ever host the Olympics?
What for? And if it ever happened, I'm afraid it would end up with a scenario similar to the Greek one: stadiums rotting away and a sh!tload of debts.
If Poland wants to organise such an event, it needs to embrace fully the concept of sustainability: not only the the event counts, but its aftermath as well. That requires an entire change of mentality, which is undergoing here in Britain: in the olympics context, the sport venues are designed so they can be used afterwards (e.g. newly built velodrome has been hailed as 'the most sustainable sport venue in the world'). Sports village for the 2014 Commonwealth Games in Glasgow is to be converted into a housing estate etc.
We'll see how the EURO 2012 and its aftermath will work for Poland and Poles. I'd say that its success or failure would be the critical factor for making a decision about applying for the Olympics organisation.