A good number of rich Euros do retire in Turkey. Its a thing.
Your money goes farther, definitely.
https://www.travelandleisure.com/turkey-cheapest-country-to-retire-in-europe-8411442
The Turkish coast is beautiful, as good as Greece or Italy. But I would have strong reservations about settling in a Muslim country. And Erdogan shows no intent of leaving office but does show intent of making Turkey more fundamentalist.