They are also indefatigable life coaches who simply will not take no for an answer. (Your human life coach probably won’t jump up on the bed where you are trying to ignore them and start licking your face, or bark “Out! Out! Out!” at you hundreds of times in a row.)
And if you still manage to blow off your dog, your reward is a nice pile of crap and puddles of pee in your house.
Meanwhile, the walks are enjoyable.
So you are pretty much going to be a regular walker if you take care of a dog. (Well, there are workarounds for some situations and some dogs, but why swim upstream on something like this?)