This is probably an occupational hazard of being a nurse. The fact is that you have and will see lots of bad outcomes and can too easily picture them happening to you. I won't try to tell you VBAC is safer than a scheduled c-section, although I believe it is. But I'm just an engineer and a statistician who understands when numbers are tossed around. You'll weigh your experience, however anomalous it could be, against that.
However, I will point out that rupture IS an unlikely proposition and that your doctor is not pressuring to do surgery, so it is proven that HE thinks you have as good a chance as anybody. Even most "failed" VBAC attempts merely end up with a c-section and a healthy mother and child. (The child is often better off, for having gone through some labor and being undeniably full-term).
As for the unknown, I've done both and most people feel MUCH better after the VBAC.
