It depends on where you live. About 15 years ago, the geniuses of our power company decided that they could save on tree trimming near power lines. a few years later, they were bragging about the savings... and then, in the middle of winter, with about 3 feet of snow on the ground, we had an ice storm that took out power for well over half the city. My house was without power for 4 days, with highs in the 20F. There's enough population density our lives were not in danger, but the house was only habitable because we had a generator.

And guess what? 5 months later, the summer comes, the tree trimming still wasn't done, and half the city lost power again due to a summer storm. Out for 6 days in our house. Every day we reached the 90s. Good luck insulating yourself from that heat for almost a week! Having A/C was pretty nice. The power company now inspects and trims around lines every couple of years, just to avoid power outages so wide they can't bring power back at an acceptable timeframe.

That said, the situation is rather regional: I'd not care about AC or heating in a power outage if I lived in Northern California. Around here, where we can hit the 100s in the summer and go under zero in the winter, you have to care a bit. My friend in Alaska cares even more.

So first world problems? Depends on where you live.