I hear you. It's a temporary measure: https://www.stellar.org/faq/#_Why_do_I_need_to_authenticate_.... Basically, it was an easy (but imperfect) way to start. We'd certainly love suggestions for other channels to distribute stellars.
I don't have a Facebook account, and register one detected as spam.
Of course I'm happy to beg for "money" .. so you're still reading gdb, please give me some stellar (username: pbhj). Thanks!
University accounts might be another way. Some people who don't like centralized services like Facebook and Google will still have a university email address.