The time to consider the entire punishment, including jail time, fines and penalties, parole, and the loss of rights would be BEFORE one commits the crime, not after. If you're concerned about felons losing the right to vote AS PART OF THEIR PUNISHMENT, then avoid becoming a felon.
If you knew how may crimes, even felonies, you might inadvertently commit in a day, you’d be shocked. Or the fact that something you think would be an infraction or even just a misdemeanor, ends in a felony.
No non-violent crime should resent in permanant under-class status.