We've experienced the same with our first grandson, now 8. He used to come in from school on the day we look after him and his younger sister and brother and was always full of chatter. Since going into the juniors he either heads straight to the computer to play football related quizzes and games or into the garden to kick a ball about. If I haven't seen him for a while he is always pleased to see me and that's the only time I get a hug! Was feeling a bit sad about it as he was very cuddly as a toddler but realise he's growing up and it's so long since my two sons were that age I suppose I've forgotten how they mature. Having said that, he recently turned down a two night trip away from home with Cubs saying he would miss his mum far too much!