depends on. in the past bruteforce was good for admins and other high targetted accounts, but now, when everyone is warned about how easy is to bruteforce password, so everyone who needs to secure data is choosing hard to bruteforce passwords, bruteforce is now just wasting bandwidth of your hosting. most of the hacks are done by real hackers and programmers and security gurus, not by kids, so nothing to worry about
another thing is bruteforce/combo bruteforce paid users, not that hard, as paid users dont care about your content
have luck and stay safe
