I've used the diva cup for all of two days and LOVE it!
I am not grossed out by my period but I do find tampons and pads to be a hassle, and they can be messy. The cup is so simple--I put it in in the morning and don't notice or have to think about it again until before bed. It is easy to take out, empty, wash, and reinsert. My fingers don't get bloody, I don't have to reach for and rummage through my "lady" drawer, I don't have to try to remember not to drop my tampon in the toilet because they're bad for the septic tank . . .and I never have to:
change or clean anything in a public restroom,
remember to bring pads or tampons anywhere
wonder how important it is that I find a bathroom RIGHT NOW before I leak
do anything fancy when I go to the bathroom throughout the day
spend money on my period again!!!
Oh, and there seems not to be a period smell when I use the cup, though that's not a particular selling point for me because I don't think I need to be distanced from my natural body functions (and smells). Though, despite the prior disclaimer, I am really enjoying my little curlies staying clean and dry! I can't help it!