One of the above posters says that it could be a relatively easy fix. From my perspective if it was mine I hope the insurance co. totals it so I could start afresh.
If it was fixed up I would question whether it would be totally aligned after bodywork was done? Also when u came to sell it (if you wanted to sell it that is) and the prospective buyer asked, "has it had an accident?" You likely would say yes.
I would likely only settle for a big cash settlement. Oh by the way do you have any whiplash? I am not litigious crazy but don't rush into signing anything. Is your brain scrambled? Are u thinking clearly? Don't rush into any decisions. That is my 5 cents worth..........
