Arial Black
Adventurer
Well, it depends on whether you view more work as more bookkeeping, I suppose.*
A. Wand has 20 charges, no recharge. Every time you use it, you lose a charge. When done, you're done.
B. Wand has 20 charges, recharging at 5-8 charges per day**, unless it goes to 0, when it might explode 5% of the time. So, you keep track of the charges you use. If the number ends at >0, roll the number of recharges and add back. If it is 0, then roll chance to explode, then roll recharge. Repeat to infinity (AND BEYOND!).
*I suppose it also depends on such things as the definition of "is," and the air-speed velocity of an unladen swallow, but that's neither here nor there.
**All numbers are approximate and for example only. Also? Math.
In 3E, a wand has 50 charges. On your character sheet you write, 'Wand of CLW, charges: 50'. When you use, say, 3 charges after a skirmish you must erase '50' and write '47'. Each time you use charges you must erase one number and write another, until you use all the charges, get another wand, or both.
In 5E a wand has, say, 20 charges. On your character sheet you write 'Wand of MM, charges: 20'. Each time you use charges you must erase one number and write another. No difference so far.
In 5E, there is the long rest, after which there is bookkeeping. To all that bookkeeping, simply rolling a die and getting some charges back for your wand is hardly arduous.