Yes, some people just refuse to use any mods. It took 2 weeks for me to convice one of my friends to download and use the Total Realism mod for Rome: Total War. Finally he began to use it and he was like "WOW! THIS IS AMAZING!".
Personally I always try out all major mods for my favourite games, and I always keep + use the best ones.
"Training is principally an act of faith. The athlete must believe in its efficacy: he must believe that through training he will become fitter and stronger, that by constant repetition of the same movements he will become more skillful."
Usually I don't go for mods, too.
I guess that's because most mods are utter crap, and I lack the ability to discern which are not. (until after installation, that is.)
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I'm in the IDF. (So any new reply by me is a very rare event.)