Reiki attunement and education brings you to the empowered state to heal thyself. After Reiki 1 your ability to be the healing vessel for others increases.
I find people going through their transformative process benefit a lot from Reiki 1 to accelerate their healing and expansion. You become aware of your unique gifts and talents. People already opened to their abilities find this helpful for expanding and fine-tuning their abilities. Then it is a personal choice if your interest is in energy healing to move forward.
Everyone has a different life purpose.