My two granddaughters, 2 & 4, enjoy watching Miss Rachel (American) and Miss Apple (English) as well as the singing and dancing videos on YouTube, it's fun to join in with instruments, they love it, and so do I! They occasionally watch CBeebies, but the whiney voices of Peppa Pig, Bluey and Bing really grate on me, and I get fed up hearing about subjects that little children shouldn't be dealing with, eg. emotions - feeling nervous, worried, anxious, angry, jealous, no wonder there's so much anxiety in the schools, we didn't know the meaning of the word at such a young age. Children's TV should be fun and carefree, cheerful and bright, that's how I remember it anyway. I'd much rather they watch people interacting with them than cartoons. Danny and his "the floor is lava" is fun, and keeps them fit on a cold, rainy day, they get their coloured foam mats out and jump from mat to mat. All that said, they get plenty of interaction from me, visits to the park, zoo, soft play, colouring, drawing, writing up the kitchen table, crafting, reading and dressing up. They also go to pre-school and primary school. I doubt the OP meant his niece watches TV all day, he didn't say so anyway, but parts of the day is fine, anything to enable you to get your jobs done, knowing the child is being amused and, if appropriate, safely strapped in a seat so as not to endanger itself. Let's not judge one another, being a mum/gran is busy, stressful and demanding, jobs around the house still have to be done (quickly!!), so if we can find something on the telly to amuse them while we get on, I don't see the harm in it.