2) Being bilingual (speaking two languages) is baller status.
3) Helps when applying for jobs. It not only broadens your search but it seems to me that it would make your work more meaningful, you'd likely be assisting two people who wouldn't otherwise be able to communicate, or helping someone understand something they would otherwise struggle with. Poetic.
4) Make more money, when you do land a job most of the time you added skill can also mean added moolah on your pay check because it is one more way that the company will be able to utilize you.
5) Speaking the language of the culture enhances your travel experiences 1,000,000% (DISCLAIMER: This number is based on no math whatsoever.) The more people you can have positive interactions and understanding with during your adventures the more memorable and special the trips will be.
BUT GUESS WHAT?! It's never too late.
I won't be writing my blog in Spanish any time soon, in high school I only made it through Spanish level 2 but I have dusted off the old Spanish dictionary and I am trying to master this lovely language AGAIN. Anything I can pick up will be useful and if my plan works I will stick with it long enough to be fluent. Wishing for things that are obtainable with a bit of hard work is silly, wish for it sure, but then take steps and just-do-it, damn it.
This idea is applicable to many different obstacles in our lives so whether you want to be a make-up artist, code websites, be a horse whisperer or better yet barrel racer in a rodeo, PLEASE get inspired to take action towards making that thing possible. Most of the time you are the only thing stopping your wishes from coming true.