Mine too, I look forward to returning! Thinking about it, Greece itself only really recovered from previous recessions with international tourism. It's an integral part of many economies.Even just a year without international travel would be devastating globally, there is already a very deep recession about to happen, this would just make it deeper. For example on many Greek isles, a favoured destination of mine, upwards of 70% of their income comes directly from people falling off airplanes. And let's not forget that killing tourism would also deeply impact this country too.
I think ultimately regardless of what is practical and what isn't, the most likely thing is that we will form air bridges between other low risk countries once our cases come down considerably, as just cutting ourselves off from international travel entirely is unlikely to happen here, even if it happened in most of the rest of the world - this government's not exactly famed for taking lessons from elsewhere.