Loving the place and culture where you grew up because it's yours is no different than loving your own family because they're yours, or loving yourself because you're you. Far from being problematic, being connected to a sense of identity is as human as being connected to your family. Loving your country doesn't prevent you from loving other countries, nor does it even mean thinking your own country is the best.
That said, spending some time abroad (as OP has done) is a real benefit. I never realized how very American I was until I lived abroad. It gives you a different perspective on your own culture -- you can love your own culture more accurately, seeing both its strengths and its weaknesses in a different light.
Nothing wrong with moving back home afterwards though.