If you are particularly untrusting of the person you are marrying to spend the rest of your life with, you could ask for a blood test for HPV before getting married.
Of course, your husband could cheat on you later, and give you HPV.
Given the number of cases of cervical cancer attributable to the tpes of HPV that Gardisil prevents, the risks of a trustworthy husband cheating AND getting HPV and giving it to his wife AND his wife getting cervical cancer from it seem lower than the risk of side effects from the vaccine.
And of course, if the sexually active people all get vaccinated, that will protect the sexually monogamous people if their spouses do for some reason cheat.
Yes, those are the sorts of factors an adult would weigh in making a decision about this vaccine. Another issue is that, as someone mentioned above, cervical cancer (or pre-cancerous tissue deformation) can be treated very simply. Even without a vaccine, almost all cervical cancers are in women who did not have regular tests or did not have the recommended treatment for negative results.