I was born left handed, but since my parents both were switched from left to right in school, they switched me to right as quickly as they could. I still do many things left-handed or ambidextriously (sp?).
It's very much a right-handed world, and some of the things you mention (such as scissors) are really hard, unless you have the left-handed scissors. Even measuring glasses are made for righties!
I thought I was alone in my age group for being switched so early, but I've since discovered that many parents had gone through the same thing my parents had, so they also tried to give their child the "rightie" advantage. Sometimes it works, sometimes it doesn't. I do know that when I broke my right wrist and it was in a cast, I was self-sufficient!