I'm French and I do realize it's a pretty complicated language to learn. Ridiculous amounts of exceptions to every single rule, dozens of tenses (which no one ever uses), lack of general structure, arbitrary genders, it's got it all. My personal piece of advice to anyone: don't waste your time learning French, it's a dying language. Go for Spanish if you need a latin language, it's at least used in Spain, the United…
My counter-advice to the above is that on an extremely deep, life experience level it doesn't matter how popular a language is, in numerical terms. Or what will come of that language 500 years from now.
What matters is what experiences open up to you, as individual, when you go visit (and live) in those countries, in this life, right. It's the people you meet -- and become friends with, perhaps fall in love and start a family with -- and the literature, the music, and poetry that keeps reading and listening into the dead of night and into your dreams -- that matter. Not the gender/case system, of the fact that can speak some generic version of it in 54 countries.
In that sense nearly every (major) language community is infinite, and unique. Maybe the one that's most meaningful for you will be a globally dominant language, like Spanish, Mandarin, or Arabic. Or maybe it will something far more "marginal", like Basque or Pashto.
But whichever it ends up being: whether that language is "alive" or "dead" to you will be a direct function of the energy and enthusiasm you invest in learning it, and (correspondingly) your love for the people who speak it, and their culture.
And not a function of whether you can go to a Barnes and Noble right now and find a shelf with 50 (mostly) mediocre books and interactive learning tools for it.