Why is "Duty Roulette" a solo feature?

[Despite]

The problem with your argument is you were queuing with your friends BEFORE as well. So by still doing the same, nothing has changed... except OTHER people ARE solo queuing with the roulette now, so it IS a help. Even if you keep doing as you have before.

I was? I've only used DR maybe twice or three times total. Once I tried to queue with my roommate and found out I couldn't I stopped using it.
To go even further, I don't support the use of group finders in general as I feel they break down the social aspects of MMOs. I'd rather do it the old fashioned way.
But if I could queue with friends I would most likely use it occasionally.