If you are playing as a Barbarian Monk, you will be able to get to use the benefits of rage. This means you get damage resistance, extra weapon damage, and an advantage on the strength checks you have to do.  The real question is, is it worth it to be able to rage as a monk. No, because STR is horrible for a Monk build, and it is going to cost you in the mid-game. While it is a fun thing to think about, a raging monk destroying everything in its path, they just aren't really viable.