Something nice about being able to turn on the gas, wait 5 minutes and bbq some chicken or steaks on a summer evening and not have to fuss with the charcoal or the charcoal starter or the 15-20 wait time until the coals are hot enough to cook over.
Now, you want to talk about low and slow…that’s where my smoker comes in. It takes almost 20 hours to bbq a pork shoulder (pork butt) so the charcoal startup time doesn’t really matter at that point.
FWIW I have something like this:
It has the flip up work areas on each side and a small burner on one side for keeping baste hot or cooking beans or whatever.