Good idea. Let’s lay out the basics once again:
Industrial-era humans are rapidly and drastically increasing the concentrations of greenhouse gases, particularly CO2, in the atmosphere. Therefore, if climate activity is vulnerable to these atmospheric changes, we are headed for trouble.
The questions of exactly how much trouble we’re headed for, exactly when we’re going to get there, and exactly how much of the trouble we could avoid by changing our behavior are all still very controversial. But the basic statements above are not in dispute. It is incontrovertible that humans over the last couple centuries have been significantly changing the composition of the atmosphere with our emissions, and that our current resource-use policies, if continued, will change the atmosphere even more significantly in the future.
Therefore, there are only three even remotely realistic possible outcomes for the global climate situation:
Scenario 1. Climate systems will unexpectedly turn out to be astonishingly insensitive to atmospheric changes. Consequently, our accumulated emissions, even if they do massively alter the atmospheric composition, end up having only a negligible impact on global climate.
Scenario 2. Climate systems are significantly affected by atmospheric changes, but we massively reduce our emissions within the next few decades, so that further anthropogenic changes to the atmosphere are eliminated or at least dramatically diminished. Consequently, we end up with some alteration in the global climate as a result of the anthropogenic changes that have already happened, but not very much.
Scenario 3. Climate systems are significantly affected by atmospheric changes, but we continue our emissions activities unchecked, ultimately causing massive anthropogenic alterations in the atmospheric composition. Consequently, we end up with drastically modified climate systems.
Scenario 1 would save our butts without our having to lift a finger—wouldn’t that be great! Unfortunately, the vast majority of the current evidence indicates that Scenario 1 is highly implausible, if not downright impossible. We are seeing recent changes in global climate factors that do seem to be linked to anthropogenic changes in the atmosphere. It is simply not scientifically warranted to expect, as the OP futilely insists, that we will be able to go on changing the atmosphere indefinitely without producing any non-negligible effects on climate systems. It might turn out to be true, but it would be a hell of a surprise, and it certainly doesn’t look like a good bet.
The current scientific consensus is that we are headed either for Scenario 2 or Scenario 3, or some combination of them. There’s a lot about these scenarios that we still don’t know, though, and probably won’t know for a long time yet.
However, that doesn’t necessarily mean that we have the luxury of waiting until we know for certain what’s going to happen before we need to bother trying to avert it. It may very well be that we’re engaged in the environmental-policy equivalent of driving a car towards the edge of a cliff. By the time you have 100% certainty that you’re in serious trouble, it may be too late to do anything about it. It makes more sense to stop or back up the car before you’re absolutely certain that you’re dangerously close to the cliff edge.