The future threats are not going to be gradual. The very fact you claim that as gospel truth shows you really don't have a good grasp of the science. If you fear people calling attention to a problem more than the problem itself, you are not operating in the realms of reason.
Earth has been very much warmer than it is now, but there were no humans around. If it gets hotter and keeps hotter, there also will be no, or at the very best far fewer, humans around. That's the problem.
If you cite "global cooling" as the "next big thing", then clearly you get your scientific understanding from the mass media, and not scientific journals. As such you have just informed everyone you don't really follow the scientific findings, or at least don't understand the difference between a peer-reviewed journal and the tabloid press. As such you don't really have a very trustworthy opinion on this subject, as you have not even attempted to differentiate between guesswork and demonstrable fact.
The blade only cuts both ways when you start making stuff up.
Pascal is not a high-level language. -- Steven Feiner