Bitcoin is legit. No one controls it after all. Some people say that it's a scam since it's not backed by a reputable entity. I'd say they got it all wrong, since people like you and me are what makes Bitcoin, Bitcoin. In other words, we are the ones who determine the future direction of the currency. Everything is governed by mathematics, cryptography, and algorithms. So yes, Bitcoin is a good, legitimate cryptocurrency that can be used as serious money just like the US Dollar. Don't believe anything that's said in the real world, as most negative comments are spread by Bitcoin haters. Doing your own studies will help you determine whenever Bitcoin is truly legitimate or a sham.