To Use Control Groups or not for Payables Vouchers

We have always configured our preferences for all Payables Vouchers to be entered into control groups for the data accuracy as well as centralized control of posting and approving vouchers, but were wondering for those that don't use control groups to enter their vouchers, what benefit does this hold for your company, as an instructor in a training class recently mentioned that no one hardly ever uses control groups anymore, so we just wondered why.