I agree with P'Gell and newfoundlust on this one. When you are younger and in a relationship this is normal.
However, with long term commitment and age(at least in my experience) you grow to accept your body and embrace the things you cannot change. From this acceptance, comes comfort and contentment (both, of which I speak, are a positive things in this regard).
We have been married 18 years and are completely comfortable with nudity around each other. There are days we do not wear any clothes at all. Both of us are lugging a few extra pounds we'd rather not, but we appreciate the comfort and closeness we share when we are in the nude state after we make love or otherwise.
We have a standing rule in our bed...there are no clothes allowed