Maybe it's because I grew up in a different generation and was paranoid enough to take a worst-case-scenario approach... But from losing my virginity on, I NEVER trusted condoms as my sole method of preventing pregnancy. I always thought of them only as STD protection and useless against pregnancy.
When I went through a phase of not wanting to be on the pill, I used a diaphragm with spermicide along with a condom. That's the "riskiest" I was willing to go.
“As I am sure any cat owner will be able to tell you,
someone else putting you in a box is entirely different
from getting into a box yourself.” —bisexualbaker