Here's a question. If billions of dollars were spent developing financial forecasting models so we could tell what the markets would be like in 50 years' time and they had almost no ability to predict what happened in the past then should politicians bet trillions of dollars of the world's economy on their accuracy?
Climate modelling is non-trivial stuff. It's clear that none of the models are anywhere near getting it right in spite of the billions of dollars that have been spent on them.
There's just too much information out there disputing the Church of Global Warming catechisms that the only ones who are blind are those who will not see.