Lisbon is not affordable to live in for the locals
.
I make 800 EUR a month in a Business Intelligence role at a growing multinational company in Lisbon.
My rent for a 1 bedroom flat in a very modest part of the inner suburbs comes out at 380 EUR.
Combine that with an unemployed wife and you have a pretty standard picture of what the average young couple with 1 child is faced with here. (not to speak about the thousands educated and younger than me who are being forced out of the country because they can't afford to start a family or even leave their parent's houses)
Just for comparison I lived for 5 years in London UK, made 3000 EUR a month and could save enough to travel frequently . While renting a 2 bedroom house with a small garden.