This isn’t any different from DnD, except you could choose to do it over and over and over again. DnD you are limited in the number or rages you can take.
That’s the key is you deciding to do it or not. It won’t be worth it for every fight, if you get in multiple fights a day. So you would choose when to do it.
Have had many players take this feat, and have played with the feat as a character as well.
This feat becomes particularly strong in combination with other feats in the “tree” and having a person in the party with restoration (as Sam already mentioned).
Depending on the GM, they may decide how the recovering of fatigue works differently too, as well as the 24 hour thing, and what constitutes little activity. As with anything, always good to have a talk with the GM before hand so you can be on the same page and it can help influence your character choices.