Nevertheless, another reading can be made of Marx. The often cited phrase–“religion is the opium of the people”–is truncated. What follows this remark lets it be understood that human beings need opium, because they are metaphysical animals who cannot avoid asking themselves questions about the meaning of life. They give what answers they can, either adopting those offered by religion or inventing new ones, or else they avoid worrying about them.

You know, he could have bothered to actually read Marx before saying dumb shit.

The full quote from Marx, in context, is:

Religious suffering is, at one and the same time, the expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people.

The abolition of religion as the illusory happiness of the people is the demand for their real happiness. To call on them to give up their illusions about their condition is to call on them to give up a condition that requires illusions.