Hmm, I see what you mean, although someone with symptoms as "benign" as heavy menstrual flow elect to have their uteruses removed.
There are "purely" elective hysterectomies that are done for sex-reassignment surgery, but those wouldn't be very common.
The point is, though, that an abortion and a hysterectomy are not really equivalent operations, and are not undertaken for the same reasons.
A closer comparison would be elective sterilization surgery, or perhaps the removal of a benign tumor.