Mirena
"Meh, I like it for the sheer convenience factor. In 1 year, I've gained 60lbs with and w/o dieting. I, in my late 30s, have reentered puberty (maybe menopause) with the new found acne and mood swings. Cramps are here and there, severe as they may be, they're not the worst side effect. I'm very arthritic now, some joints are crippling to try and use. Hot flashes suck, although I saved a fortune on heating this winter. Acid reflux was increased. My hair is super brittle and dry now.
Now for the plus side. I DO NOT bleed anymore :) I may decide to suffer through on that alone. It has helped my depression and anxiety, so much that I have been able to almost wean off the antidepressants.
I love the shelf life of five years too."