I have a 32 DK right now the same level as my monk and I feel like I can outdamage my monk regularly while providing a hell of a lot more utility.

I've said this like a month ago. Monks still suck. Monks still need a lot of work. Are things really going to change? Who knows.

Monk base damage needs to go up a good 10-20% before the class, if DPS is its primary niche, really even works. Right now Monks do not offer enough utility in justification for the amount of damage they do. They should either have more utility than they do now OR do more damage. Pick one, Sigil.

Light Fighters in general outside of the bard are still the most useless classes in game. The disparity between light and defensive fighters damage wise should be drastic and if you look at actual numbers, they're really not.

But then again, Sigil has created a game where every class is capable of DPSing so I don't even really know how to fix that...

Monk damage does take a step up at 50 along with some decent weaponry; while you could wish for a more even, thought-through (ie, updated from it's "oh SNARF"-state after LU#1) and non-broken damage output (dragon breath for example) it's still decent enough.
However, the road to 50 is paved with gravel, and a class shouldn't start to bloom on it's last level.
With the accessories of weapon purchases availible currently, light fighters will fall a bit behind on the early levels (even though I am playing a rogue in wait for some content now and then, I'll have to disagree with the statement that light fighters suck, without any really large investment I'm quite capable of plowing through content and 2 shotting 3 dots, or killing 2 dots at a very high pace - and that's from a class that's supposed to be bad at soloing.) At higher levels when the "twinking" isn't as obvious and abilities have spaced out (the higher level, the less chance of suddenly "blooming" by getting a new superb abilitiy or falling behind because skills are getting badly outdated) you'll have to try hard to be outdamaged by a defensive melee.

Reason in my opinion? Abilities haven't been polished since the "oh-SNARF" period after LU#1, and thus are not really in balance with other classes performance (which was already pointed out before the update). Monk ability list is quite rocky as it is and have to many BANG!s (where you get a lot of fancy abilities) followed by quite a few dead levels instead of a more steady progress.
We also don't really recieve the amout of abilities that other classes do due to our specialization, if this is good or bad I'm not sure (some classes are just plain excessive) but we could for sure use some more varied utility which gets creativly and naturally intervowen into the playstyle.

Excellent post, Leishiu.

Really what it comes down to is if you're willing to suffer through the still beta-esque calibur of class balancing (you're telling me broken stances 3 months into release isn't a problem that should've been eliminated in beta?)  that's going on right now. I'm currently unwilling to do that, but that's merely me. There is still a high level of class systems that need to be rethought and redone if Sigil/SOE has any intention of creating a balanced game and some of the issues/imbalances in my opinion are atrociously mind boggling.

I may come off as harsh, but I've never seen a game outside of SWG at launch with such a tremendous disparity in terms of power between its classes and archetypes. If you can cast spells, you're pretty much a god. And if you're a defensive melee, you can tank AND do excellent damage. If you're a Bard, people bow before you. If you're a Ranjuh, you get l33t DPS/buffs/utility and evasion on par with a monk. If you're a Monk, you can do some cool and intimidating kung fu while waiting for your class to blossom at ... 50

Interesting a few of us seemed to pick the DK as a alternative to the Monk until the class gets fixed. I enjoy my DK she can solo like a champ lvl 14 killing yellow 3 dots. Plus I'm an armor smith with her and I plan to make my monk armor with her. I find Monks tend to do a lot better with the best armor much more gear dependent of a class. I could hardly stand to play my monk until my guild started handing down some crafted and adventure gear. Even with the gear my monk wouldn't dream of trying to take on what my DK does.

To put another note to backup soluss kinda. 

I am a 50 Dragon Monk Currently (switch all the time, drunken at heart), with all heroics level 50+, all lucent heroic rewards (2 rings, 2 earrings, face, cloak), Afrit weapon quest completed, and the 72 DPS handwraps from Rhaz.  I get out damaged by DK's of comparable (and worse) gear, hands down.  Currently, my guild is not even considering DK's as tanks as their DPS/Utility is far superior than them tanking.