It is the futility of employment in an economy that primarily exists to make life luxurious only for the controlling elite that leads to drug abuse, alcoholism, single parenthood and hedonism. When people realise, as most do, their complete lack of worth, they seek oblivion or the transitory feeling of worth that creating more cogs for the machine brings them.
You will tell me that life is not all about work, that people should seek fulfilment outside of their work. I reply that you are a naive and blinkered fool. Deliver your platitudes to the man who has worked all day providing goodies for the lord of the manor and has returned home with only enough energy to eat a ready made meal and flop himself in front of some undemanding tosh on the goggle-box. If he can find enough strength he will punch you in the nose.