I was unable to use AAS for a while, so I was constantly looking for other ways to have an edge. I tried GH, Sarms, slin, DAA, IGF1, other peps, just about everything.
GH was by far the best, but also the most expensive. Without AAS, you still get the increased recovery, better sleep, fat burning, etc. I feel there is a special synergy leading to muscle growth when using AAS with GH, but that doesn't mean GH is a waste when ran alone. I don't think the GH made me gain any extra muscle at the time, but it sure helped me grow 'naturally' as much as possible without getting fat. I feel it is a huge advantage over true natty lifting. Obviously gains are far greater when using it with AAS, but I was very happy with it as a standalone.
Whether it is worth it or not depends on how much income you are willing to throw at a supplement though. At the time, business was good, and I didn't mind spending that kind of dough each month on something like that. Things have slowed down a bit with this economy, so I would be reluctant to use it without AAS at the current time.
As with any hormonal supplementation, it is only good for as long as you are using it.... so I personally wouldn't bother with it unless you can stay on it more often than not, or if you have a specific event you are trying to look your best for (a competition, wedding, etc).