Hello.
Me and my wife are originally from Turkey but we are in Germany for 6 months. We are considering buying 2 months in a row pass. So we can travel freely and by taking a break. But if there is a home country question here.

Can we choose Turkey as our home country? So we can return to our home in Germany and travel back when we want again. 

I am asking because paying for trains to the border in Germany every time will cost a lot and it will not be useful and preferable for us.

(We have a residence of course in Germany, but also in Turkey. But we do not have a residence permit, only D-Type Visa.)