Players who invest an average of 10 minutes of their time to create a group are more invested in the quality of their teammates and more committed to the challenge of the content, especially if there are difficulties along the way. A matchmade group does not possess that screening process because it is designed to be as convenient and effortless as possible. This is the antithesis of the difficult end-game content such as Nightfalls and Raids, which are not effortless and rarely convenient, especially with the ever-growing list of glitches (of which Bungie ought to be fixing instead).
Destiny currently has no social search parameters and no anti-grief measures. Matchmaking without these things offers no way to filter your teammates and no way to deal with them once you have them. This means there is no accountability for matchmaking, no accountability for playing poorly, and no accountability for leaving. I don't care what you experience during your Raid, but I don't doubt for a second that matchmade groups on average will be less successful than pre-made groups with the current game's systems.
Sure, we can add all of those things and then add matchmaking, but the end-game content is not something you queue up for on a whim unless everybody knows exactly what they're doing. You will be dying often, especially if you've never done it, and matchmade groups are not obligated to hold your hand. In what world are Destiny randoms going to get on mic and teach the other team how to down Crota? I've been in Raids where teammates only had rare weapons. What matchmaking group is going to wait for them to go back to their vault and pick up better ones? Just as easy as it was to queue into a lobby, they'll hop right back out if the group is unfavorable - for any reason. There goes your Raid.
I'm not saying matchmaking is impossible, and I'm certainly not saying the current systems are ideal. However, I think it'd be a waste of developer resources at this point to design all of these systems for a part of the game that is not designed to be accessible. It's not a quick or effortless activity and it's not intended to be easy for the majority of the playerbase. That part of makes it worth its salt as end-game content. If supporting that barrier for entry makes me an elitist, then I'm fine with it. I'd rather see a LFG board of sorts in a portion of the tower, but by the time that is implemented, the comet expansion will probably be out. At the rate Bungie patches the game, you'll be waiting a long time for matchmaking - longer than hopping on the internet and finding a group.
