I totally get it...but we don't need to 'exercise' if we keep ourselves other wise busy...my firm belief is 'use it or loose it'. So what if I don't want to go swim...go backwards and forwards in filthy chemical ridden water or go into gym and pump some iron in stuffy air.. (been there and done that....) I rather do something useful..use my body physically for things that make sense...walk the dog, do gardening etc. it is proven good session of house work is as good as gym session...etc..I hear what you are saying but Ive done it all before. Ive been training in the gym for an hour a day, I know I get bored and stop. I prefer riding my bike outside but the winter is not the best time for me to do this. I used to go swimming but then they closed the pool down. I do not find exercise to be pleasurable and therefore choose not to do it. Some people like the buzz it gives them. I just do not see the point of wasting time when I know its something I will never like and will stop doing.
Just do what you enjoy as long as your body moves...