I added THCa to my original post, but the decarboyxlation process is how the various acids (the A at the end) in the plant break down, yeah. I wouldn't really call it degrading, but THC can degrade over time if exposed to oxygen or light, or stored somewhere too dry. They sell these little saltwater packet humidor things from some company called Boveda. After drying and curing, you throw the pack in a mason jar along with your flower and then you can store it for up to a year without losing much quality.