Not many folks care about a lake freezing less but they will care when those trillions of dollars of multimillion dollar properties get swallowed up by the ocean.
The disasters will become so catastrophic and numerous that funds will run out for recovery and folks will mass migrate to less affected areas which will collapse the system. Humans will become nomadic again.
So if we drastically lowered emissions and irrigated and grew plants on as much available land as possible it would both provide a cooling effect and draw down huge amounts of CO2.
We're supposed to be carbon neutral by 2050 but we are heading in the wrong direction fast. At this point I rather have nuclear war to reset everything.
If we can keep it under around 3C we may avoid that fate. This book will explain. https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewBook?id=1435723767