I do not know what your country is, but one must always look for the alternatives because although they seem to be non-existent, there they are, you only need to look for them. And good in my country, everything is crap, but the teachers of my school, are people passionate about what they do, that even though their salary is equivalent to $2, they work and do not give up what they like to do. is to teach. And well, as for the things that one learns, I think that none is useless, all, absolutely all you can get to serve, are like tools, but you have to know how to use them. Finally a greeting and a hug for you friend.