We have an eight month old cat, I feed him, change his litter, open his cat flap, take him down every morning for breakfast... yet it is one of our DC that he just adores
DS is 6, and the kitten sleeps next to his head every night, we have even caught him grooming ds by licking his hand or head in the night lol. He doesn't really like being cuddled or held, unless it's by ds who he will let hold him like a baby for hours on end and sit in his knee purring.
Our other DS doesn't get a look in, it's a very different kitten/child relationship, as kitten only wants to play with our youngest ds. Kitten drops cat toys at his feet like a puppy, or get the zoomies with him.
The kitten is not at all interested in me and dh, it's funny really. I wonder how they choose their favourite people