In a global sense, it really is. So is eating at restaurants regularly, or even eating meat with every meal. We just don't realize it because we live in such rich countries, and everybody does that stuff here. Me included. But most people in the world can't afford to live that way and currently don't. Please note that I don't think these things are bad or immoral, just that they are expensive to produce and expensive to consume. The Earth's resources can only sustain a small fraction of its population living that way. They are extravagant luxuries, and we should be thankful we get to have them.

It is though, globally speaking. It's something that consumes a massive amount of energy and pollutes a lot and should be priced that way.