Sure, 'someone' probably said every stupid thing you can imagine.  But not the scientific community.  Feel free to present recent scientific papers asserting the opposite.
More energy will be used for cooling than is currently used for heating.  
You better raise family food at home because the massive droughts and elimination of snowpack will destroy most of the world's most productive farm regions.
Good thing you will take 'tropical' vacations closer to home, because most of the truly tropical places will be full of starving, radicalized people trying to survive.  Syria is an excellent example.  
Won't just be LA and NY that sink.  New Orleans, Houston, Miami, Seattle...
Climate does always change.  But every time it has spiked so quickly like we're causing it to do now, there are mass extinctions.  
Odds are good you're too old to see the worst of it, but your kids and grandkids certainly will.  Be sure to tell them what you're thinking now so they can thank you in 40 years.