So basicly, your complaint is that gameplay over rules realism?
If you want weapons with no spread go play CoD, don't shit up Halo with your need for everything to be "realistic".

You really are vain, Seriously, if your complaint with the DMR is that someone may get a lucky shot [which judging by your bitching has never happened to you before] then WOW.
With or without bloom, there would still be lucky shots.