There is evidence for a global flood. They have found tons of fossils in the mountains as well as sign of rapid deposition. A global flood would have dramatically change the layout of the Earth.
Look at mount st Helen when it erupted. It spewed out loads of material in a very short amount of time and had a great impact on the landscape around it.
I respect your views and overall it is a very interesting discussion point. You may very well be right.
I wish we had all the answers...but at the same time the journey of figuring out the truth is half the fun. Seek knowledge.