I don't know that many priests who are actually materialistic, but EVERYBODY knows who the ones are that are.
I'm going to say that, if my wife were to die before me, I could embrace celibacy wholeheartedly. Part of that is due to my age (53), but also because I've known the companionship of a wonderful woman and I don't believe I'd have any real desire to "replace" that. So embracing celibacy at this stage of my life wouldn't be that great of a challenge. And this seems to be the same thing I've found with those men (one of whom I know very well) who have entered the seminary after the death of their wives. "I had a wonderful wife," Jim told me last year before he entered the seminary. "I carry her around with me all the time; no other woman could replace her."