We aren’t but can afford not to, and both are saving most of their money for future travel, eventual houses. If they weren't saving, they would be paying! Both help out with cooking, cleaning etc when not working.
Eldest finished final year at uni early, managed to secure probably one of the last retail jobs around in late April! Knows what he wants to do career wise but recruitment likely to be delayed by virus, and similarly his planned travelling later in year.
Younger one has had 2 yrs in retail whilst also going abroad to volunteer/travel. Not sure of career plans, didn’t want to go uni. Had planned to go off abroad for a longer stint this summer, but again, it will be delayed now/or she may sort out career plans in meantime.
I think it comes down to individual circumstances, and includes making sure the young people aren’t taking things for granted. I would charge if they were at home and working professional jobs, or splashing the cash (when not locked down) but neither are like that, so I think they might as well save their money whilst they can.