Ya'know what... go right ahead and try to terraform the Earth to whatever you think is... best.
Your doomsday prediction may then come true actually. Self fulfilling prophecy and all that.
God speed in making your artificial ice age.
Oh good grief. Are you getting your position here from Snowpiercer?
Your position is to try to simulate a volcano to cool the Earth and "let's just see how it goes".
Ignoring the fact if we do that, then a natural volcano could go off as well and set us over the edge, causing an ice age.
Sure you can hand wave away the repercussions pointing to a movie, but it's still your stupid suggestion.
And what retarded logic that is, just because Armageddon is a movie doesn't mean asteroids aren't a threat.