Are you kidding? Using faucets you learn nothing, while on Facebook you can browse popular pages and read the latest news, have a good time reading jokes or simply socialize. On Youtube you can watch documentaries, learn to code, practice your listening skills in a foreign language...
Now that you mention it, facebook and youtube is not that useless after all. I only use youtube for listening to music and facebook to chat with friends. NOw you've given me a new perspective in using this media tools. Though I still favor faucet a bit because you can have an income though very small.
Yea, there's much to do online than just go browsing aimlessly off something. There's actually online sites that offer crash courses such as udemy. Earning a living with Bitcoin would most likely profit technical constitutions and development.