There is no missing piece. We all know we need to drastically cut carbon emissions, capture as much carbon as we can, and use energy sources that do not emit carbon into the atmosphere. That's pretty much it.
So the only argument for "this will lower quality of life" is that things might become more expensive. But renewable energy in fairly cheap, so I'm not convinced that on average quality of life will suffer. Some things will get more expensive, others will get cheaper.
You're missing one of the biggest contributors: construction. Cement and steel are both huge sources of carbon emissions. There are potential solutions to this, but it's another very difficult area to transition.