Everyone saying Alchemy must not play on High/Full Pops where every craft is for a significant loss and you’re better off selling mats without insanely lucky procs. Most of my gold is made with Blacksmithing, Leatherworking, Disenchanting and Inscription.
The only ones worth getting are Alchemy and Herbalism. Alchemy, similar to the two main gathering professions, provides a stable income of gold in WoW. Mining and Herbalism are two of the most valuable professions in WoW, offering essential resources.