SO DH grew up with dogs and I didn't (we had a cat). I understand that he is a 'dog person' and I am not, but surely that doesn't make one of us 'wrong'.
DH has wanted to get a dog for years. To be honest, I have always avoided committing one way or the other but recently he has geared up the 'get a dog' campaign and now (unsurprisingly) has DC's (3&5) on board - to be honest, they could be roped into a 'let's get a half dead frog' campaign for the price of a packet of crisp - but anyway, I now have all of them banging on about getting a dog.
DH's perspective:
Dogs are loving and a calming influence in the home
Dogs teach DC's about the importance of caring for animals and making a commitment to look after something
Will force us to walk and exercise more
Will offer protection (even if it is only barking at the postman)
Dog will make the family feel complete
He will walk it (yeah right)
My perspective
I don't particularly like dogs - some of them scare me
They smell horrible
I don't want to have to deal with dog food / dog shit / walking dogs in rain
Dog will moult everywhere and I will end up doing some even more housework
Rows about where dog is allowed to sleep etc
I hate dogs begging for food and the thought of coming across half chewed bits of food in the house makes me want to vomit
Cost
Finding care for dog when we go away etc
See! My list is longer, so AIBU to not want a dog?