The one thing I didn't consider that has become my biggest reason for using menstrual cups over pads & tampons is the sheer convenience. Seriously, they're so simple. I pop it in the morning when I expect my period and can leave it in ALL DAY. Yup, up to 12 hours. Of course there are days where you might have to change it more frequently than that, but even the fact that it is an option is remarkable, and without a warning for Toxic Shock Syndrome, too. This means no extra trips to the bathroom during your work day, no having to leave class for fear of leaking, and no having to ask around for tampons (or worse yet, have to buy one from the nasty machine in a public restroom, God willing it's not out of order).  When I travel, I just throw it in a small cloth bag and put it in my toiletries. It's such a simple and easy way to deal with that time of the month, I really can't imagine doing anything else at this point.