Should we must stop global warming? why? i need reason from your.?

need stop global warming, can grow less crops, have less green planet, have more deserts , ice sheets there less places live, stop global warming can have more hurricanes , extreme weather use have decades ago.
stop global warming can have more taxes, failing economy, less jobs , more governmental control.
need stop global warming, raise energy prices, more old people cannot afford heat homes in winter die.

i want presentation topic. need answer question...
sorry if english bad :)

Environment Global Warming Next