My husband is older than me - 68, me 41. He cannot walk far but tries to stop me walking the dog on the fields?

He has worn his legs out, but I love exercising mine. We are lucky to live in the countryside with fab views and I just love exploring, about an hour a day, after I have done all my woman chores, washing, cleaning, meals, home baking and working part time. He is being selfish isn't he, or am I? He is v domineering and controlling and this is the only freedom and hour away from him I have?