Ilikemilk - I am really struggling to understand this, however compassionate i try and be. I live in South Manchester, there is absolutely loads to do. I dont know how old your kids are, but we do the following:
Parks - dunham, tatton, John Leigh, Wythenshawe park, Heaton, Worthington
Stuff to do - Museum of Science of Industry, Eureka, Manchester Gallery, Imperial War Museum, that ski place (not been), Blue Planet Aquarium, Chester Zoo, Blackpool Zoo, Knowsley Safari Park, Martin Mere, Red House Farm, Stockley Farm
This isn't taking into account shops, play areas, restaurants, craft groups, kids theatre
I'm sorry to say this, but this sounds like this is more about you having a block in your mind around M'cr, rather than being around nothing to do......