Yes, I have never got this either. I absolutely LOVED the school holidays, and refused to go back to work full time, after going from full time to part time when I had my 2 DC - less than 2 years apart in age. I went from 5 days a week to 2 days one week/3 the next until they were 4-5, (then went to 3 days one week/4 the next.) DH - and my workplace - wanted me to go back full time when they started school, but I dug my heels in and refused.
I even kept them off a few times (rang in sick for them, and myself) when it was a particularly glorious day (weather-wise) and took them to the beach. #sorrynotsorry. We did so much together in the holidays too. Theme parks, zoos, long walks, trips to the park, picnics, trips to nature parks and areas of nature beauty, the cinema, the theatre, the bowling alley, and the beach etc... DH would come too, maybe 1 in 3 times.
I have honestly always been baffled by the 'can't wait for the kids to get back to school' type of parents. It's like they don't like their own children. I also know some mums who work as many hours as they can when the kids are off school. One woman I know stays home during school hours, then goes to work (hourly paid/unskilled job,) when her 2 DC (aged 5 and 7) finish school, and works til 9pm. Sometimes her partner looks after them - depending on his shift, and sometimes the teenage son looks after them. She works almost all the hours her 2 younger DC are off. It's like she HATES spending time with them. When she's at home with them, she just shoves them out onto the front garden to play while she stays in the house, or she shouts and screams at them.
I don't care if it sounds smug or high and mighty, I loved spending time with my children, and LOVED the school holidays, and I'm not going to apologise for it, because others count down the days until they go back to school.
I really miss those days actually......