I mean, my life is pretty damned busy. I have three active kids and a demanding business, and yet I find I'm constantly yearning for a dog. While every part of me thinks I must be mad to add another layer of complexity to my life, I also can't help but think of the positives it would bring.
The cons as I see them are: being tied to the house more (our youngest two children are still primary age so we don't do spontaneous trips away anyway), picking up poo (gag), potential smell in the house, another mouth to feed, walks in all weathers, and the cost.
However, the pros are also there: I think a dog would help simplify my life in some ways - forcing me to take a break and go for a walk (I always feel 1000 times better for getting outdoors, but never do without a reason), encouraging us as a family to get outdoors more, and I think it's great for the kids to have a dog around. I love the idea of a gentle companion for them, and for us too. While our lives are busy, we can work from home and our eldest is often at home as he's at college part-time. The security element is reassuring too.
Am I mad? What were the reasons you wanted a dog? Did you ever regret it? Am I overlooking a massive pro or con?