Sympathy is hereby extended to you!
Your support group is right here on Wetpixel and we are indeed a very supportive group as many of us have "been there, done that, worn the t-shirt".
I flooded my Subal housing when in Indonesia. My camera, 105mm lens and 1.4x teleconverter were all toast. I can understand some of what you are experiencing. Shock, denial and eventual acceptance were processes I had to go through.
As others have said, if you can learn why the flood happened and take steps to make sure it never happens again, you will have gained an important piece of knowledge that should serve you well in the future. In the meantime, I offer you my heartfelt sympathies.
Ellen