Question about buying Carter BBD for my 318 (unless I should look at something else)

I have never seen a carb so worn out that it needed replacing. But-um,
I have seen:
Many a plugged carb-heating system,
many faulty chokes,
and many many Ignition timing systems that needed a buncha work,
Not to forget, the occasional;
faulty cooling system thermostat,
out-of-time cam,
lousy torque convertor,
tight U-joints,
dragging brakes,
over-filled automatics,
and
guys running on tires with not nearly enough air pressure in them.

So I gotta ask why you feel the need to change the carb?