Is it worthless, no. Is it good? Well, there are other things out there that imo are way better and more cost effective. Plus you typically need to take this with arginine, at night, and on an empty stomach, yadda, yadda, yadda. I think it was mainly touted as a gh releaser, and didn't do too much for recuperation or anti-catabolism.
What are you looking for by way of supplementation?
For me, for recuperation, I make sure to get a good after workout meal, like 60 grams of protein with some carbs. Some bb'ers drink a coke right after to give them that insulin boost which aids recovery.
One supp that has caught my attention is nac (n-acetyl cysteine). It is a powerful anti-ox but is also supposedly an aid to combat catabolism.