Well, I think it is better to immerse yourself in your targeted language. We should realize that a language is a tool for communication but not a subject to learn.

Hm, I do not think so. I belive there are no simple or difficult languages. Maybe you can learn one language easily and other one hardly. It's depend on your own language. But every language must be very logic otherwise the nativ speakers cannot understand each other, either. Just find that logic and your motivations! :)

I agree with the people above here. You need to work at chatting with friends. Trying to remember all those grammar rules can be difficult for American children learning to speak their own language, too. I'm from the USA. I personally had a difficult time learning all the English language laws in school, too. But, people learn a language in different ways. Don't give up unless you don't want to learn it. It is your life and you can do what you want. But, it seems to be a world language. If you enjoy talking to a lot of new people, knowing English (or at least some of it) is a good way to open up your life to new people. Good luck to you on whatever is your decision.