I've been mousing with my left hand for more than a dozen years, initially changing to combat strain on my right wrist. I have come to love having my right hand free to press Enter, Delete, Page Up, Page Down and the arrow keys without losing a hand on the mouse. But I lost the often-used Cut (Ctrl+X), Copy (Ctrl+C), Paste (Ctrl+V) and the tab switcher (Alt+Tab) in the process, now having to move my left hand off the mouse to perform these. But there are alternatives for the first three:
Why does it take me years to uncover these kinds of tips? Sigh.