My favorite reason for using single quotes whenever possible, is that it doesn't require two fingers (Shift for double quotes), so it's easy on my fingers and f

My favorite reason for using single quotes whenever possible, is that it doesn't require two fingers (Shift for double quotes), so it's easy on my fingers and faster, and it's also easier (for me) when switching languages, as normally you can use string interpolation when using double quotes. Similarly I find myself favoring += 1 for increments over ++ as the latter doesn't work in Ruby.