The Dangers of Mass Illegal Immigration

I wonder whether you can understand the fears that people have in countries like Britain about mass illegal immigration. I think it's a very important topic to discuss humans on our illegal migration has always been there throughout decades and centuries as we know it in case of warton countries. The only route available was through selling the house for my father and putting the money and all his fate into the hands of an agent so sadly because of the lack of these official routes or the routes people have to either give away their life and their futures stay in the country where they either die they have got no futures.