Hysteria is not needed.
The effects of global warming are very uncertain. Nobody knows exactly how bad it will be. We just know it's an ongoing process and that CO2 emissions are the probable culprits.
If there is a risk of fire in your house, you would take some steps to insure that your property is safe by doing some necessary improvements (or having it done), and take a fire insurance coverage...
It will cost you some money and then?
It seems to me that you are only convinced by some hypothetical cost-benefit analysis... That's a very good way of thinking, go ahead and do the math, just remember the high degree of uncertainty in every parameter! "Economic Growth" depends on increasing the number of people working in a human community... increasing the hours each works... increasing the stock of machines, tools, plants, stores, highways... increasing education levels, on-the-job training, learning by doing... technological progress... natural resources!!! (productive inputs provided by nature such as land, minerals and water).
Now, the problem the world is facing is about the "loss of natural resources". The importance of natural resources are not the same for every economies. Some need it more than others.
Who said the poor countries should bankrupt themselves?
The Kyoto treaty will not doom the world economy! It is just the world's fire insurance. Thanks for talking about responsability. Think about the responsability of polluters. Think about poor countries dependance on farming and tourism.
Don't fall into the hysteria trap, just breath and remember we all live on the same planet.

Sailom

Email