I guess I would suggest consideration of the great many spiritual texts upon these topics, these are spiritual problems and there are spiritual solutions and most of the things which you mention in critically evaluating religious thinking I would say are not religious thinking per se but definitely bad religious thinking. I'm not playing semantics here. There has been a great deal of bad religion and unfortunately the cultural shifts and wars which have followed one upon another since the day of the reformation has succeeded in identifying all religious thinking as homogenous and qualitively similar or even exactly the same.
The patterns of dependency, blissful ignorance, vain glorious hopes, they've all been soundly critiqued in ancient and modern religious thinking, most of earliest critiques of idolatry and reakoning and reasoning about the non-corporeal nature of God deals with these sorts of problems.
Unsurprisingly I dont think that the disappearence of religious beliefs would be beneficial to either believers or mankind generally, believers and non-believers alike, but I do think that the disappearence of bad religion would sure be beneficial. Although the same can be said for philosophy and ideology too. My reason for thinking this is that I believe that bad religion is a vehicle and should it disappear it will only be replaced by bad philosophy and bad ideology until such times when that vehicle isnt needed any longer, that vehicle will not be needed when a certain sort of psychological norm has been reached and a certain sort of social character is supported structurally and culturally. Belief or non-belief, provided it is good, ie ethical and reasonable, can serve that end.