I have used a diaphragm for over 2 decades. Never had it break. Very easy to put in and very effective if used properly (e.g. don't skip putting it in "just this once"). The great thing is no artificial hormones in your system! I tried BCPs several times, but they kind of make me crazy--depressed, manic, crying jags, etc. They are also quite inexpensive. You can expect one to last a decade and cost under $100.