Maybe if you hate hand luggage you should get another job !
To ban hand luggage may well force you to get another job !
Colleague flight testing an aircraft in Lidkoping flew from there to Stockholm to Glasgow last week. Forced to put an expensive pilots head set in hold baggage, which he would normally have had in hand luggage. Hold bag lost. Headset lost. I travel on holidays with a (reasonable sized) camera bag. Its wider than 16 cm. So do I put cameras in the hold ? I think not.
If check in agents or FA's object to the size of carry-ons over all these years, why have they not enforced the previous size rules ?
Sensible sized hand luggage, which might be 20 cm width, but is not 16 cm, is a necessity to simply keep your travelling public, your Customers, whether on business or pleasure, because the airline industry cannot stand the loss in revenue, and the subsequent loss of jobs, if even a small percentage of your Customers decide to stay at home.