When you edit pictures...

[Sarah8914]

Do you save over the original file? For some reason I'm scared to. I have a bunch of family pictures we took last weekend that are way too cool in color and have a black hose behind them. I can easily edit both of those things and would never use the picture unedited, so why am I scared to save over the original? I know saving jpgs over and over affects quality, but will one time affect it that much? I'm crazy, I know.