kid yourselves as much as you want - locked diffs are a pain in the ass for everyday cars. carparks, servos etc become a real chore. Steering effort increases, handing is compromised, and you will break axles. It might be 'fun' for a couple of months, but you will get sick of it sooner or later
On the track its a very different story. Some of the fastest Improved Prod cars run locked diffs. And V8 Supercars run spools. The horrible handling that you get on the street with a locked diff can be overcome with some good rubber and aggressive suspension geometry.
I disagree about Detroit Lockers being safer - the sudden drastic changes in handling behaviour mind corner is far worse than a constant handling trait. Detroits should be kept for drag cars and 4WDs.
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During normal cornering, you actually have only one wheel drive.
you never have one wheel drive - even with an open centre torque is always distributed evenly to both axles. the difference lies in which wheel limits the amount of torque that can be applied.