Hey all. I'm still quite a newbie here, so maybe this question has been posed before. Is there a specific reason that many warn not to go against the grain? I find that after my first shave if I re-lather and go against the grain that I actually get an incredibly smooth shave. I've not experienced razor burn or ingrown hairs--I just didn't know if there something more sinister at work as for the reason to go only with the grain. Thoughts?