Earlier quoted context omitted.
> deportation isn't this what you'd want? deported back to your country? It's not like you could be denied entry at the airport, and deported back to the foreign country...
With deportation you're probably going to spend a few days in prision until they can sort you a flight out. Then as other commenters have mentioned, it's going to have some long lasting consequences. It will make a lot of the countries in the world require you to get a visa before entering (or even transiting), as in apply for a visa, spend 3-4 months dealing with embassies and spending a decent amount of money while…
I.e. you'll know what it's like not to have been born in a first world country.