Answer:
It should be discontinued if it isn't morally right to do.
Explanation:
The tradition in The Lottery was that every year, the town would have a lottery. Whoever won would be stoned and killed. They don't really have a reason to do this other than it being a tradition that has already been done dozens of times.
A tradition should be discontinued if it isn't morally right. It isn't right to kill a town member every year for doing nothing wrong, so it should be discontinued.