Agreed. When things get bad, there's going to huge pressure on politicians to do something, and at that point there's probably not going to be any good answers. Geoengineering is risky, especially if it's rushed, but it's within the means of many of the countries that will be worst affected by climate change. Even if it has a very low chance of working and a high chance of worsening the situation for everyone, I'm sure at least one political leader is going to pull the trigger when they've got an angry mob beating down their door demanding action.