Is it that big of an "investment" that you need to agonize over it? Flip a coin, learn whichever one. Then assuming you're not currently dying of cancer and don

Is it that big of an "investment" that you need to agonize over it? Flip a coin, learn whichever one. Then assuming you're not currently dying of cancer and don't get hit by a bus etc., learn the other one next. You've got plenty of time. Your thoughts as revealed by the question fall into a pattern I recognize from when I was younger, where I used to think (for example) 6 months was like this eternity, and (for another example) what I was gonna major in was super important because it would define my life for 40 years. Ha ha, I should've been so lucky! Or rather, unlucky, because reality is much more interesting. The reality is, in 10 years you'll be learning something else entirely, and when you've been at this game a while, you start to lose count of the languages and paradigms you've learned. You get so you can pick up a language in a couple of weeks, or a weekend. Each one of them is worth it, for the things you learn along the way, and the ways it teaches you to think. Any rock is sufficient for sharpening your knife.