Though I'm one to question a lot of things and this is my 2 cents. How the hell we know this current changes are completely abnormal? I read about some weird climate anomalies centuries ago and of course there's a lot of evidence that current events are completely abnormal but one question always come to my mind.
What if we're wrong? What if we're being too cooky thinking that by having looked into some evidence that made sense, we're not completely wrong here and current events are just part of a cycle in the planet weather?
Again, I'm questioning but I don't need you guys to present me the proof, I'm aware of it. Just questioning if we're not wrong all along and are here destroying our mental health for nothing. Seems like even by the 1940s standards our generation is being constantly swarmed with problems which we can't fix, which are causing all sort of mental issues due to the complete stress we live in.
This being said, the switch from fossil fuels should be done ASAP, even if we're wrong and it's not causing issues in the environment, they are for sure causing health issues.
Doing science. Thing is, unlike what everybody likes to pretend, doing science means to do a lot of tedious hard work and not a whole lot of quick explanations. So the thing is, that we understand the physics of dilute gasses at roughly room temperature phenomenally well, we did all the experiments of putting this gas into a piston, and then heating the piston slightly, and then do it with a slightly different gas mixture, and then we double checked all these experiments and finally we got a pretty good theory sometime around the turn of the 19th century. Then you start to integrate all that knowledge with a knowledge of radiation basis, and you start doing cross checks and try to understand weather, and at some point try to start forecasting wether, with all the associated trouble and that was then sometime in the let's say 1960ies or thereabouts. (During WWII the flying wing of the US Army had meteorologists at all airfields, I believe German news started to broadcast weather forecast in the late 60ies.) Then you do all that with bigger computers and quite a bit of theory of partial differential equations, and then you realize that understanding the 11 year average is a much much better defined problem than next weeks weather. And all of these steps do suggest different cross checks. (Actually in the Physical Science Basis part of the 5th IPCC report there is a chapter called Evaluation of Climate Models ([0], p. 741), which goes into quite a bit of detail on the most recent efforts along those lines.)
[0] AR5: https://www.ipcc.ch/report/ar5/wg1/