Shipping container homes are awesome looking. Aesthetically aggressive, burly and industrial. Diverse in their beauty. Even elegant.
They can be more economical to build than regular houses. Tools and materials can be safely stored and locked up inside the container after a long day of building. This save time and money on transportation and storage.
They are made to be moved and so container homes are great for unique spots on property as well as being suitable for temporary land share-agreements.
They’re popular in the media and in the public domain, making them very easily rented out and capable of earning a passive income for the owners.
They are ecological. While debatable, some may argue that they are the most ecological homes in the world. To gain this monumental title, a home needs to be carbon neutral or even better: run a carbon deficit.
When someone builds with a used container, they take a byproduct of the industrial age (effectively waste) and gives it a useful purpose. 5000 pounds of steel takes an enormous amount of energy, water, and minerals to produce. Re-using it will ensure a tremendous saving of resources for future generations.
Yes, there are cons around building a home with a shipping container. Cutting steel is a screeching and awfully loud noise to endure.
There are challenges around moisture management and make-up-air [http://blog.yaleappliance.com/bid/83815/What-Is-Make-Up-Air-Definitions-Solutions] which need to be addressed carefully.
They are boxy and this can be less than an enjoyable shape to inhabit. They are generally not warmly embraced by townships and municipalities because of their novelty. And building code is still struggling to catch up and understand how container homes can meet modern housing requirements.