It is necessary to learn foreign languages. That's why pupils have got such subject as a foreign language at school. Everybody knows his own language, but it is useful to know foreign languages too.
I learn English, because I understand that I can use it. For example, if I go to England I'll be able to speak English there. If I go to the USA I'll speak English too. English is used not only in England, but also in other parts of the world.
I like to travel. But it is difficult to visit countries, when you don't know the language of these countries. If I know the language of the country, where I am going to, it will be easy to travel there. If I want to ask something, I can do it in English.
I like to read books. And I like to read newspapers too. 60% of all press in the world is published in English. If I know English, I'll be able to read English newspapers and magazines. Knowledge of foreign languages helps young people of different countries to understand each other, to develop friendship among them. For example, we have a foreign exhibition in our city. If I know a foreign language, it is easy for me to visit this exhibition.
You can see a lot of advertisements, signboards, names in the streets. They are in foreign languages. Very often they are in English. If you know English, you can read and understand them. Now we buy many clothes from other countries. If you know English well, you can read something about the size of this or that thing. It is clear for you what it is made of. There are a lot of films in foreign languages. If you know them, you can understand films without any help.
In short, I understand that I have to learn English in a proper way and I try to do it.