You know, I've come to realize that while I like dressage, I cannot tolerate doing *only* dressage. In order to enjoy my horse, I need to get out on the trail once in a while, or else I feel completely fried. And then it starts to feel like a chore.
So I think your plan to ease off on the training and lessons for a while, and go for some low-key pleasure rides as the mood hits you, is a great one.
And as others have mentioned, if you do decide you'd rather run and spend time with the kiddos, that's okay too. Hobbies are supposed to be fun!