Hmm, I wouldn't go as far as to say that all other cryptocurrencies are scams. There are certainly some shady projects out there, but also many with genuine goals and dedicated teams.

The key is to do your own research. Check out the team behind a project, their goals, how they plan to achieve them... And always be cautious!

That being said, I'm a Bitcoin guy through and through. It's got the longest track record and has proven its resilience time and again. Plus it’s got one heck of a community!