Value of the Backhand Loop
If I could go back 36 years and tell myself one thing as I was developing my game, I'd tell myself to develop my backhand loop.
Sponges weren't nearly as good back then as modern ones, and so it was much harder to backhand loop with great power without backing well off the table to give yourself time for a bigger swing. The thinking for many was that if you develop your footwork and forehand, you don't need as much of a backhand attack - i.e., "one gun is as good as two." And backhand loop? It was a nice shot, but not really necessary.
And so I didn't really develop a backhand loop until I'd played many years. The result is it's not natural or particularly strong, can be erratic, and is not a particularly instinctive part of my game.
With modern sponges you can loop just about anything, even balls that land short over the table (especially with the backhand, where you can wrist-loop it), and so players pick up the backhand loop early as a dangerous weapon. A good backhand loop gets you out of those pushing rallies (including pushing back deep serves to the backhand) that put you at the mercy of the opponent's loop. Meanwhile, I still struggle to get myself to backhand loop against deep serves (I can't step around and loop forehand every time), and against quick, angled pushes to my backhand, especially after a short serve to my forehand. You don't have to rip these backhand loops; consistency, depth, and spin are key. (You can often get away with a weak loop if it consistently goes deep.)
Just as difficult is backhand looping in a rally. These days many of our up-and-coming juniors backhand loop (often off the bounce) just about everything - or at least topspin their backhands to the point where, compared to backhands of yesteryear, they are backhand loops. This turns players like me into blockers, and not in a good way.