birth control
"I give it a 4 - mostly for the convenience.  I went off of the pill because if I missed just one, my period would start and last for a full month.  So the patch is easier for me to remember to change.  The downside for me is that since I've been on it (maybe half a year), several times I've had my period come every 2 weeks.  I'm also using birth control so that I'm only supposed to have my period once every 4 months.  So much for that.  I think soon I will be asking to switch back."