
I won't take the doctrine approach (for now). So let's ask what you get out of religion (which is a more rudimentary question)?
- Social supports
- A sense of purposefulness
- prayer which aids in stress management
-practicing temperance improves health outcomes (abstaining from risk taking behaviour i.e. drugs, alcohol, non-comittal sex)
- Intermittent Fasting (promotes mitochondrial connections which helps with longevity).
- Regular religious attendance is said to add years of life.
- Religious people live longer than Atheists and Agnostics.
In secular countries, where people have benefited from improved health care, sanitation and public health programs it appears that religious people are healthier than their non-practicing counterparts. I don't know why, but I'll leave it at that.
I should add, having been born a Muslim. It's far easier to die as one. It's the religious system practiced by your forefathers and the majority of your ethnicity. Even if you see this argument as a logical fallacy - argumentum ad populum. Questioning belief within a culturally conservative milieu could have real implications on your life. Even if your faith is weak leaving would be too much of a headache and announcing would probably mean a withdrawal of support. And let's just say, those that get ex-communicated have to piece together new identities and create new families from scratch (unless your folks are uber liberal).

Better to be an imperfect Muslim than a pariah. Logically it makes the most sense to me. And of the three Abrahimic faiths - the most preferable (my opinion).