Is it old fashioned to give your spouse a beejay after 20 years of marriage? What?? No..
Just realized this is a very old post.. saw the title of it and it made me giggle.
Well... Not if they don't like it, if you don't do good cunnilingus, if you have bad hygiene etc... Why should anything EVER be automatic other than courtesy, respect and trying to meet your partner halfway?
Rather ask yourself: Why should a wife want to consider giving her husband a **. and I think more than just the sex life would improve.