Points and seams matching are important to me and I will rip out if I have to but I find if I take my time preparing the fabric (washing sometimes and starching if necessary), careful cutting and matching and pinning I rarely have to rip out. I mark my points with a pin and then with a marking pencil on the wrong side so I have a place to shoot for with my seam. If I go too narrow then I just sew again to hit the point and I don't rip out since it's in the seam allowance anyway. If I go too wide and cut off the point then I rip. I pin my seam intersections. It takes more time than just stitching but it is rare that they don't match so very little time is spent on ripping and repairing. I try not to be too OCD over it but it's hard for me not to be.