I have lived in Athens all my life. I was born here, I was educated here, I made friends here, I studied here, I worked here and, if I had the opportunities to go after my dreams in this country in general, I would definitely not try to leave.
That means that if your employer is going to pay you well and if you have a family and children, you should take this decision. I won't lie by telling you that leaving in Athens is exotic. The Acropolis and the historical wealth of the city are granted, but the city is big and, unfortunately, a little chaotic. The crisis makes the center look a little abandoned, but there are pleasant neighborhoods off the center to stay. Even better, there are magical places to visit all over Greece and all over the year.
There are things that you will hate in Greeks, I do as well. Many of them will park on sidewalks and the pedestrians have NOT the right of way. Strikes of social and working groups take place because of austerity measures, often paralyzing the country. But there are also things that you will love in the greek way of life. If you take the decision, try to adopt new diet habits (oil, fresh salads, olives, feta, chalvas, pies with wild herbs are some examples and all of them in abundance). Let your children learn the language, let them and yourselves start thinking in this language -this is my privilege of being Greek, otherwise do not expect that there is some Greek DNA from my ancestors still running in my veins.
Make your hobby visiting the museums of Athens, it is really relaxing and makes you proud of living in Greece. There are many opportunities in this crisis that spring up, through which you will definitely be easily adapted. I think you should remain positive and not try to detect all the ills and the negative aspects that exist in all countries and cities of the world.
Besides, this period of crisis is one more reason why all of the wrongdoings come up in the surface; for me, it is our opportunity to correct them -if only our politicians could grace this holy country. Then ask your employer whether you can change your mind in a year or two, in order to go back to UK in case you don't like it in Athens.
I am sorry that my reply is so long. I just understand that you can't take your decision lightly and, thereby, I tried to give you as much information as possible. Maybe I could send you some more in the future. Why don't you start checking what you can do if you move in Greece and in particular in Athens...? Here are some ideas: http://www.namuseum.gr/object-month/201 … 2-en.html,http://www.theacropolismuseum.gr/en,http://atenistas.org/guides/,http://www.chios.com/ for summer vacation...