Look, sport-o, if it's so important, then pull your squidly ass over to the side of the road and send your text, otherwise, hang up and ride.
(And, seriously, texting? The ABSOLUTE BEST PART of riding a motorcycle is that idiots can't bother you when you're all by your lonesome and sealed up in a helmet. If you're the kind of gregarious monkey who has to constantly engage in mutual flea-picking with the rest of the troop, a bike may not be for you, because it is solitude on two wheels, dude.)
That said, I do not support making texting-while-riding illegal. Go to hell in your own way, but if you hurt somebody else on the way there, I fully support rushing your victim to the hospital and finishing you off in the bar ditch like a mad dog.