We can easily run the entire planet on renewables and we will be doing that by 2050 or so. Solar, wind, hydro, even supplementary nuclear (dont put reactors on fault lines).
Also, CC does effect places other than the far arctic- there are island nations going underwater because of sea level rise. As will our coastal regions. And the greatest time to be alive- maybe- but that doesn't mean there aren't big problems. Cancer is on the rise as well as conditions like autism, ADHD, etc- from environmental factors like organophosphate pesticides and other toxic pollutants. Companies like Dow are allowed to exceed safe spraying limits year after year and they are spraying toxic pesticides near schools (and exposure to them by pregnant women results in babies being born who later develop the above conditions.) And CC and higher humidity levels are causing higher rates of asthma and other breathing problems especially near cities because the levels of smog are much higher than they were before, So Cal just set a record for 82 straight smog days, and all of this has been linked to CC. Higher number of tropical infections are also connected directly to CC - you dont really want a warmer planet, I have traveled to tropical regions, do you know what kind of horrible parasitical infections occur there?