Yes it is as has been pointed out illegal, but your a big person now, so you get to make your own decisions. Just be aware of the potential consequences of those decisions.
Another consequence that hasn't yet been pointed out IF a collsion occurs you will be found by your insurer to be at fault, you entered another vehicles lane, illegally. So increased premiums at best. Just went through it myself, I was riding in MY lane when a car road raged, (he decided I was going to slow as I approached a line up of staopped cars), tried to go around me, (single lane) hit my bike. He then fled the scene, reported to police and insurance that I was lane splitting and hit him then fled. My insurer advised I was being determined 50% at fault collision on my record. Unfortuantely for him I had a camera mounted on the bike clearly showed him in my lane and him fleeing. Insurer reversed their decision and he was declared 100% at fault.