When I first read this, I was not sure what to make of it until you posted again and mentioned that hubby is a fitness kinda guy. I suspect that his comments were based on what he thought was an honest answer to your question. I am sure he wasn't saying it to hurt your feelings, but if his delivery DID hurt your feelings then say so. Explain how his comments made you feel, but also give him credit for answering you and not simply lying to make you feel better. Communication, communication, communication!!!
I agree with lots of posts here that you finding time for you would be a good thing. I don't always do it, but when I do make time to exercise, I feel SO much better in all ways. Your schedule sounds like most of ours, but I think you need to consider that if hubby can find time to work out, then there has to be time in there for you as well. Sit down with him and talk through your schedules and see if you can eek out even 30 minutes to walk once a day and you would feel so much better about tackling that big list of things that you are responsible for everyday. Yes - I do believe in super moms. I also think that most dads would be super dads if we gave them the chance, gave them some responsibility and backed off and let them actually do the work, and if we ASKED for time for ourselves from time to time. (I am soooo guilty of not doing any of those things.)
Good luck. Talk to hubby. Get yourself where running up some stairs feels GOOD, not breathtaking for the wrong reasons!