Since we have no science that tells us how to stop global warming or if it even can be stopped or possibly even be reversed, dealing with its effects is all we can realistically plan for.

All those other concerns you cite will have to be dealt with as they occur.  

The Paris Accords were primarily a funding mechanism to send our tax dollars to other places in the world which are anticipated to be affected and a 'this feels good' pledge to maybe do something to limit CO2 by the major CO2 producers without any enforcement mechanism.