I hear ya.  There are many times when I feel useless online myself.  But you know what, there are also many times where my opponents/ teammates are the ones who look bad.  You can't be the best at everything, right?  I personally don't care how bad my teammates are online.  The only thing I care about it is for my teammates to stick it out.  I hate it when I find myself in a heavily lopsided team match due to all of my team mates ditching and I hate it when people ditch co-op matches after only giving a level one try.  It's understandable if the person is interupted by something more important, but I hate getting the "I'm bored so I am leaving attitude".

Rant aside, what I am getting to is that there are many tolerant gamers such as myself who would be more than cool to play with someone like you who claims to be horrible.  So give it a chance.  You don't know what you are missing. 

Stop hishacking threads!  You know who you are!