Just how much of a commitment is a dog?

[googgly]

I want a dog. I love dogs. The dcs want a dog. DH is just starting to come around.

We live in a big apartment right next to a huge park. We have a live-in housekeeper who likes dogs and is willing to walk it. There is almost always someone in the house. I don't mind getting up a bit earlier and taking it out first thing. I have friends lined up for dogsitting.

So is there a reason not to get one? Is there something I'm missing? It will need 3 walks per day, feeding, a bit of grooming, company. Can be left alone for a couple of hours if necessary. Is it OK if the late night walk is just a short toilet opportunity?

Wisdom please from dog owners. Especially those who find it a pita.

i love my puppy to pieces

-he has pulled my washing off the radiators everyday,
-my cat has yet to come below shoulder level since his arrival
-my garden is now a muddy pooey mushy mess
-my back doors are covered in muddy paw prints
-my mum hates him cause he jumps on her
-he bites my sons toes
-house smells like a kennel
-he still poos in the house
-his early morning howl is the most annoying alarm clock ever

but i love my puppy to pieces, he is worth it all for the joy he brings to our family, and he will be trained!!!!!