Ask yourself if you can wait the months and years it takes for HRT to affect hair, or if you want it gone tomorrow?
Laser kills all the actively growing hairs, and they stay gone for weeks (like 6 weeks for facial hair). So, once they fall out over the course of 1-2 weeks, you are hair free. And when they do come back, they are much lighter and finer each time. After 1-1.5 years of treatments (every 8 weeks), they're all gone, forever... while HRT is variable.
If you have the money (or can get assistance from your health insurance), laser is the only option in my book.