Still, why should Russia have them and not Poland?
The answer is simple: because there are already far too many nuclear weapons on the planet. What does a (still) poor country like Poland want with that crap; especially when it's a member of NATO? Aren't there any more pressing issues in Poland to spend money on?
Still, that shouldn't preclude the right of self determination of Poles.
Yup, just like Iran, North Korea, Israel, South Africa, Pakistan... ;)
Poland signed and ratified the Nuclear Non-Proliferation Treaty, so the nuke option is off the table anyway (yeah, I'm optimistic).