There are two extremes of morally superior posters on this thread. Those who think that keeping your house clean and tidy is tantamount to child neglect, and heaven forbid that you run the vacuum round in case your child misses out on attention from you or on anything interesting. And those who think that cleanliness is next to godliness.
I am in the middle of those extremes, and I imagine most people are.
To the OP I grew up in a house similar to the way you describe yours. I was embarassed and ashamed to bring friends home. My mum hated housework, and used to run the hoover round occasionally. She never dusted, she never washed the kitchen surfaces down, toilets weren't cleaned. Basically our house was disgusting. We had a dog and a cat, and there were pet hairs everywhere. My mum did draw the line at the dog sleeping on the furniture though.
“We do have visitors and no one has complained, but we're an easy going lot.”
I would be too polite to complain if I was in your house, but I would make a mental note to wear my oldest clothes if I was visiting you.
“The idea that those who live in a clean and tidy home are dullards is ridiculous.”
I agree StoneOf Destiny
I vacuum and dust roughly once a week, and my house is always cleanish, and sometimes tidy.