3 Hours To Ready For A 1 Hour Walk

OK now, you tell me what is wrong with this picture.
We have started our Spring Metro Parks Nature walks and we try to do at least 2 a week.
So think about this for a minute...
I have 3 children, two of which have long hair the other has like minimal hair to comb.
2 are old enough to pretty much dress themselves and the other, well that one needs a bit of help yet.
So why is it it takes me 10-15 minutes to round up the clothing of the day and it takes us all 3 hours to get dressed comb hair, go potty and put on shoes?
This is a big turbulence factor every time we go some place.
Why can't we just get our act together in oh, say 1 hour to go on a simple, little one hour walk?
Why is it you try to do nice things with your family to make life a bit more fun and interesting and it always turns out to be a chore and a half?
Once we get to the park every one is ready to walk and share in the wonderful nature experience, it is just the getting there factor.