Despite abuses of it, there are still too many reasons to need it, like when President Franklin Pierce pardoned an abolitionist for harboring fugitive slaves, or when George Washington pardoned Revolutionary War vets involved in the Whiskey Rebellion.

Better yet, there are a ton of cases since the 1980s prosecutors exploiting technicalities and mandatory minimum sentencing laws to get nonviolent drug offenders imprisoned for 10+ years on simple possession (not to to sell drugs, not PWID, just possession).