It seems that from what I've learned, the vast majority of Klal Yisroel didn't return for Beis Sheini. I was taught that this was on account of the fact that the talmidei chachamim didn't advocate the ...
If there is a positive mitzva of living in Eretz Yisrael, why did the scholars of Pumbedisa, Sura, Nahardai, Mechoza, etc. remain in Bavel. If it was to learn Torah from the giants, then we can focus ...