Theft and looting etc. are serious offences, and I'll tell you why. The right to property and the protection of it is one of the fundamental rights that holds society together, and has done for a very long time... without it naturally comes banditry, lawlessness and a breakdown of society and its norms.
What is the point of working to better your and your family's lives in the future and have things, paying taxes, saving money for retirement, doing the right thing, trying to do business and creating jobs, playing the game in all sorts of way so that there is a future for law-abiding people if some braindead oxygen thief can just turn up anytime they like and take it away using violence with no consequences? None at all. Theft should have a standard jail term of 1 year.
This is why the West is decaying, because it is weak and society has lost its way. Most of the rest of the world take theft very seriously for the exact reason I've outlined, as its a huge threat to the health of society and culture... it wasn't so long ago that looting would elicit a very harsh sentence, even being sometimes summarily shot, and there was far less theft than now.