Regardless of many of the posts you have read, your not alone. I bought the game day 1 release, still dont have a single character above 42. I struggled getting there.
For those folks saying, "get yourself geared", on low pop servers, there isnt any gear to be found. Either you level multiple toons to support your characters 5 levels at a time(Extremely Boring) or you stop playing like I have.
Oh, and for the newer folks, ALOT of Class Quests mobs have been changed since release up to level 25. Silvers instead of Golds and "addons" weakened. I am waiting for Bioware to finish the higher levels...aint gonna wait much longer, though.