Even if I am not very religious, I would say one of the most important arguments pro any sort of religion: Hope.

One of the moste things Religions are providing is "hope".

Hope, that next live is better.

Hope, that there is some meaning in life.

Hope, that the "rightous men" will benefit from living their "rightous life". (What is rightous is defined by the religion in question.)

Hope, that the people, which are abusing other people just for their own benefit in this world will get punished in the next one.