Islam only diverges so noticeably because it's the youngest of the Abrahamic family (to date). Jewish and Christian cultures exhibited the same behaviours in the past, similarly justified by scriptural readings of much the same texts.
In 600 years' time, Islam will have flexed and softened as Christianity and Judaism have. Like its older siblings, it will have selected different parts of the shared credo to keep and to sideline.
@Abend asked: For those posters claiming to be critical of religion across the board, does this include literally all religions or are there any you appreciate a little bit, or conversely dislike more than others?
I despise all religions. It may be hard-wired in us to seek parental figures who tell us what to do and that it'll be all right in the end. It may be natural to worship or similarly elevate charismatic individuals. It may be understandable that limited reasoning capacity fosters belief in the supernatural. To me, these are all weaknesses and inimical to human wellbeing.
I think the Enlightenment is the best thing that's ever happened to humanity. The religions I despise the most are the ones putting up the strongest resistance to reason, the scientific method, individual freedoms, secularism, progress and reform. At present, Islam is one of those.