I am a righty too. Writing and doing things with my right hand make me very comfortable. Thus, it helps me do things very fast. It doesn't really matter at all. The most important is you are using your hands for good.
My husband, my son and I are all right handed but my youngest my daughter who just turned 5 years old is left handed. It is strange she is the only lefty in our immediate family she has as uncle and a cousin who are lefites though.