Why would you prioritize a threat that will kill you 30 to 40 years from now
Because climate change is a long term process and the changes we make today are going to take 20-50 years to take effect.
It's like being infected with rabies and thinking you have a few months before it will kill you, ignoring that the treatment must be given promptly or it won't be effective. If you wait until the symptoms show, it's too late to treat it and it's almost certainly fatal.