In any editor I move lines around with the keyboard frequently. Using the mouse/trackpad is distracting and slow. Can the same be accomplished in Excel and I just missed it?
Press Shift ⇧+Space ␣ while on the row you want to move (row 1 in your example in the comments above). This should highlight all of the row.
Press Command ⌘+x to cut the highlighted row.
Using the arrow keys on your keyboard, go to the row you want to insert the cut row before (row 4 if we continue the example).
Press Control ⌃++.