We got back from a long trip last night and didn't step foot in the house until gone 9pm. There was a fire on our train route so trains were cancelled and we were massively delayed. By the time we'd eaten and bathed DS he didn't go to sleep until past 11. This is an exception, a one off due to the circumstances but obviously everybody is knackered this morning.
DS (3) goes to nursery twice a week mainly for the socialization, I'm a SAHP so it's not exactly necessary as in we dont rely on the childcare, yet DH said we will "look bad" if we don't send him because he "needs" to be in nursery 
Personally I think everybody, primarily DS, would have benefited more not having to get up so early after spending the previous day travelling on multiple trains all day.
It's the last day of nursery term and then he's off for the summer holidays anyway.
Who is BU?