I do press mine open when I have a lot of pieces coming together. For me (and yes it may only be me) I have an easier time matching when I press to one side. I have never had issue of breaking a needle when quilting with seams pressed to the side.
I also lower my stitch length to at least 2, most of the new machines come up at 2.5 (not sure how many stitches to the inch that is). I think the other thing is that SID was not meant to be in the seam line but a little to the left or to the right of it. Most older quilts I have noticed have the quilting stitches either just to one side of the seam or a 1/4 to the side of the seam.