Sang the Beatles, & at the time it seemed very inspiring, but in the artificial environment of civilisation, all you actually need is MONEY, which goes a long way to explaining society's ills.
Those who preach love are usually not short of money.
The power of money has been corrupting human behaviour & society ever since it was first invented, which was a long time ago. The British, more than anyone, refined this corruption.
As a means of exchange, money is essential. What is so corrupting about it is its ability to create more money. Anyone with enough money need not work, but can simply let their money work for them.
And what do most social science academics do? They rationalise this madness, because it is the source of their own generous salaries & pensions.