I believe that nature will continue to cycle. The phenomenon itself doesn't concern me.
The downside is the weather precipitated by warm wet period could beat the hell out of some parts of the country/world. Look at lousiana, if they and other coastal states continue to be hit by hurricanes, It may just be abandoned.
Ice storms like the one we had here this year came just short of being a real problem. My car had 3/4" of ice on it and many trees were lost. We only had about 4 days of ice but it shut the city down.Not categorically global warming but a big enough deviation from normal to be worth considering. Canada has had Ice storms which took down the major power lines and created a pretty serious emergency with no power in winter. In and of themselves BFD.
The doomsday prediction is that weather becomes so unstable that superstorms damage exceed our ability to repair them. If you magnify what happened in LA by a factor of 5 or 10, using the U.S. as an example then I'd say you have a major problem.
Not to mention that small scale changes upset farming, ocean flora and fauna. Food shortages etc. I'm not sure how many metrosexuals ; ) and the elderly would fair under a more primitive environment .
Consider how much movement of goods occur by sea and highway. More frequent and severe storms would definitely complicate what we take for granted.
I'm not overly concerned. I may have beachfront property after the big melt. ; ) But seriously it could be quite bad. Then again, mount helens erupts cools off things for a while then global temps drop a few degrees. We have become more aware which gives us more to be worried about. Current scientific studies show that we have been in an unusually stable period.
Worth considering but who knows for sure.