Like Manda from Chicago, I experienced extreme preeclampsia at the end of my first pregnancy. I was not feeling well on Friday so my doc had me go to the maternity clinic to get checked out. Since I had some back pain in the area of my kidneys, they thought I had a kidney infection. My blood pressure and everything else was fine. By Sunday I was miserable, when we got to the hospital the nurse thought the blood pressure machine was broken and got another one. The nurse joked that if my blood pressure was really that high, I should be dead. She stopped laughing when she checked it again with a new machine and manually. I was immediately put on meds to reduce my blood pressure and prevent seizures, as well as induced. After hours of not progressing well and minimal changes in my pressure, a C-section was done. I remember little of the birth of my son and really didn't get to see him until the next day. Even after delivery, my blood pressure did not come down and I spent a week in the hospital until the doctors released me. I then spent an additional month taking blood pressure medication.
I've had two more children since. My doctor put me on aspirin with my second as a precaution. I had no problems with my 2nd and 3rd pregnancies, and both were VBAC's. My doctor did tell me that it's more likely to occur during the 1st pregnancy.
After my experience, I say the benefits outweigh the risks.