Since DS2, age 3, had his measles jab he has dropped his daily afternoon nap, getting him to go to bed at night is a palava and he wakes in the night which he doesn't do unless he hasn't slept in the day.
Now I know most kids have given up napping at this age, but mine sleep until later than most, and this is annoying. His nap time was my time to MN eat lunch and get jobs done.