This isn't about me but someone I know that doesn't play as much as most, and is a DPS Marauder wearing Tionese gear with a few pieces augmented. And was a 16man SM op. This is just a Rant to for the little people out there that aren't geared as what some other people are.
Content in the game is designed specifically for different gear levels - and there's a transition from one level to the other. Becoming a fresh 50, taking your free gear and then winging because you don't have the time or inclination to improve your gear but still want to do harder content is just silly.