We are in the age of endless lube commercials and zillions of lubes on the shelf at your local walmart or grocery store. This should tell you how far we've come as a society that accepts sometimes women can't produce adequate lubricant on her own, or changing positions can make for a dry dick, or the fact anal sex needs some lubricant.
It's common sense this is totally ok, or else women wouldnt be having 20 different kinds of water based lube and silicone lubes at our disposal at the local Target store. It's just as silly to presume needing lube means you are a failure as a female.
For many of us, lubricant makes sex possible and less painful. It's a goooood thing.