The debate has been raging for years over hyphen vs non-hyphenated domain names.
Nowadays there's been an increase in type-in search engine traffic (search words typed directly in to the browser address bar), and it's increasing. So type in a few of your favorite search words, and see how many hyphenated domain names show.
That will tell you. (Then tell us!)
HINT: In the same way many people only search for a .com domain, they also don't use hyphens in their search terms.