When I was a teenager I hated that time of the month. The cramps were awful. In my twenties, I came to completely accept that part of being female. Though, what did annoy me hugely was my period starting on a day I did not expect it. (Lesson: ALWAYS be prepared). Within a year of stopping my cycles, my wrinkles started. Wrinkles on the face; looser, dryer skin on the arms, etc.
I guess every stage of life has its good and bad points.