I'm going to be blunt honest with my opinion and you're welcome to hate me. You ain't going to learn anything.

Let me explain why. "Almot everything looks interesting" and "it's hard to pick one" mean you aren't really that "interested" in any of them. That kind of cafeteria selection works great in cafeteria, but language learning is a long-term project, and you're at least looking for years, and it might very well be a lifetime project. This is a sad realization, but most of us on UL have experiences in learning (or trying to learn) several languages, if not dozens, and most of us are stuck with just a couple of our "favorites." Liking a specific aspect of a language is the worst reason you can think of, because you aren't dedicated to the language, you're just enjoying it as a novelty: once you get used to it, it'll soon become boring and you'll be looking for your next affair. Some people do develop a stronger tie with the language other than script, sounds, grammar or whatever, and they're the ones who go further.

So... what kind of motivation would I recommend to have? It's like a marriage decision. You might like that girl/guy for a party night, but not for the whole life. If you live in New York and the girl lives in Budapest, the relationship ain't going to last very long. If you're a secular atheist and the girl's a fundamentalist jihadist, you ain't going to live with her no matter how fucking sexy she might be. So, do more research, learn not only about the language but the culture that you're going to have to accept as a part of your life. Just like marriage isn't just about having someone to have a sex with, you're going to have to change your lifestyle to integrate that language you're learning, and this might involve having to acquire a different taste of things (music, movie, literature, whatever.) and I'm putting it this way because you don't seem to have a pressing practical worldly "need" to learn something (like compulsory English in many countries).

This is my experience. I fell in love with Thai once, and this one lasted more than six months. I actually completed a couple of beginner textbooks and I was supposed to be ready to move to the next stage... which I didn't. Beyond the introductory stage, learning Thai now meant doing some stuff in Thai, and I failed to develop any appreciation of Thai movies or TV shows. Thai literature was virtually inaccessible where I lived, and that would have demanded a much higher level of knowledge even if I could get some books in Thai. Music didn't please me enough, and finally, my plans to find a work in Thailand didn't work out. At that stage, learning Thai simply became a burden, and I couldn't extract anything that was relevant to my life. So, I dropped Thai and after three years, I forgot almost everything. Six months of hard work, gone.

So, my conclusion: don't ask people for reasons to learn a language. You need to find it yourself, and the most important criterion should be "relevance" to your life.