I think your experience is non-standard, judging by the fact that there doesn't seem to be anywhere near the same kind of dissatisfaction with the monk as there has been with the ranger and sorcerer. In fact, the elemental monk stands out as the only subclass that people who aren't into CharOp forum discussions rag on, IME.
It certainly doesn't match any experience I've had in my own games, or watching other people's games.
hell, I rarely use stun with my Eberron monk. He's collected several ways to stack damage onto every attack over the 10 levels he's seen, so he focuses on dealing damage, harrying enemies the other's can't get to as easily, and doing things like teleporting in with blessing of the raven queen (30ft teleport, resist all damage until start of next turn), patient defense, cobalt soul counter attack when someone misses, and 2+ enemies are tied up trying to mess with him.