Unfortunately for you, you learned the first law of hair removal the hard way: Never permanently remove something that you might want at a later date.
Electrolysis is fine for the chin, the lip or the bikini area because it will never, ever be fashionable for a woman to have a beard, a mustache or unsightly bikini overgrowth. Shaping the eyebrows is a much more delicate situation. Eyebrow widths and shapes come and go almost as often as hemlines, so it’s better to pluck them. Of course, you don’t want to be hearing this after the fact so….