What about a diaphragm? They work without hormones and have no side effects. They never caused a stroke, infertility or PID; you won't gain weight, get depressed, or lose your libido; your periods won't be affected. They have never been the subject of class action lawsuits and are instantly reversible.
If you want to have sex and not get pregnant you have to use some sort of birth control. You just can't have it both ways. There are non-hormonal and non-invasive methods of birth control if that's what you're worried about.