For the most part I am a leftie. Writing, Hockey, Baseball (hitting), Golf all done in the left. For some things however I use my right or am ambidextrous. Scissors, can openers, most any tool or weapon I can go either way.
Only thing I'm strictly right is in using my computer mouse, but that it the way in which I was taught and it feels normal. I had a gf once whose whole family used their left hand despite being right handed, though that does make sense given that such an orientation leaves an open arm for writing something down on paper.
Interesting side note, of my immediate blood relatives I have 2 sisters (of 7 people total) who are right handed while everyone is a leftie.