"Yeisei V'Lo Achminei" - let Moshiach come but do not let me be alive to see him [Sanhedrin 98b].
Rebbi Yochanan said that he'd give up the privilege of greeting Moshiach in order to avoid living through the terrible days of the Ikvisa D'Mishicha. With the Geula so close at hand why will they be worse than the rest of the Galus?
Rav Yehonoson Eibshitz says that since the Shechina is with us in the Galus we are protected. However at the end of the Galus when it is time for us to return to Eretz Yisroel, the Shechina will need to leave the galus and come to Eretz Yisroel to prepare and facilitate our return. During those waning days of the Galus, we will be left on our own without protection and endless tragedies will befall us. Only then will we realize how fortunate we were to have the Shechina with us.
How does Rav Yehonoson Eibshitz know that the Shechina will return to Eretz Yisroel before us?
The pasuk [Nitzavim 30:3] says, וְשָׁב וְקִבֶּצְךָ מִכָּל הָעַמִּים. Chazal tell us that the word וְשָׁב, which means ''He will return'', proves that Hashem is with us in the Galus, or else it should say "V'Heishiv"- ''He will return us''.
Rav Yehonoson Eibshitz says that we see from here that first וְשָׁב, Hashem will return to Eretz Yisroel. Only after the groundwork is laid, וְקִבֶּצְךָ מִכָּל הָעַמִּים, will He bring us back from among the nations.
Source: Revach L'Neshama