I don't think blondes or redheads give daily head either, to be fair! Why are we acting like a wife's purpose is to suck dick every day? Dude doesn't have a wife fantasy he has a sex slave fantasy which is frankly dehumanizing.. When I think of the word wife, daily blowjobs isn't my first thought.
Now - sexual fetishization is a thing and it's not exactly fun or flattering for people on the receiving end, from what I've been told by, well, people on the receiving end.