How does learning a second language (the first being your native one) help you in life? Does it give you more skills?
It challenges your mind, pushes your comfort zone! You learn to think with a new format form one that you are very used to, and languages like Chinese or Japanese have writing very different from English, which is challenging and makes you think. Languages like French or Spanish are related to English, so it can build your understanding of English Words and Stems, which builds your vocabulary.
You can communicate with people who don't speak your language. My partner cannot speak English. If I hadn't been able to speak another language, I would never have been able to get to know him. You never know when knowing another language will lead to an amazing opportunity.
Learning english helped me a lot obviously and now that im working on my goal to become a hyper polyglot i just really like to read things that i could not understand in the past sometimes i just run into a youtube video or website that is not in english so it makes me really happy if i can understand it there is still some important and interesting knowledge that is not available in english.