Please specify which of my assertions you disagree with. I said the climate has been changing for over 4 billion years. I said we were in an Ice Age a little over 10,000 years ago and that sea level was much lower then. You could walk from Siberia to Alaska. That is all pretty standard science, but if you disagree we can debate it.
I also said Science does not support or reject specific policy prescriptions such as the Paris climate deal. Do you disagree?
I can at least answer your last request about more compelling or immediate disasters. You remember Paul Ehrlich and the population bomb and the billions who would starve and the collapse of civilization in the 1980s? How can you forget we were supposed to reach peak oil in 1979? And, of course, Y2K was going to end civilization as we knew it overnight. Compared to those, a slight rise in sea level 50 years from now isn’t all that scary, no matter how much you hype it. Further the CO2 emissions reduction strategy can’t work unless we stop China and India from their plans to double world output of CO2 in the next two decades. There is essentially no hope of doing that. Really our best approach is to go with minimally disruptive adaptation to climate change.