I have a 4 year old son and we do lots together but he is obsessed with trains and wants me to play trains with him a lot. I really do struggle to enjoy this. We do activities outside and visit friends but there's days it's just us and he wants me to play trains all day! Even half an hour is enough for me. He gets upset if I try to get out of it though, he's very persistent! Lately I'm busy and just don't have the patience or will to play trains, so he has to play alone a lot and I feel so cruel if he asks me to play and I say I can't right now... do I need to change my attitude or is this ok? I feel guilty. I know kids need to be able to play on their own, but how much is too much?