Might seem like a high rate, but when you take into account the failure rate of other contraceptive methods, sterilization is statistically lower than most other forms.
Check it out: Failure rate of oral contraceptives for one year is .1% in laboratory settings up to 5% in typical use.
And the failure rate for male condoms without spermicide is 3% when used perfectly to 14% in typical use.
In both forms of sterilization, the failure rate for one year is not even more than 1%. In other words, you're good.
I might as well get my tubes tied if I'm over 30 and safe from baby rabies, if I have the money.