I hate Pepper being in armor. In my mind, Pepper should be mundane almost to the point of caricature. She should be a goddess in her mundane world of paperwork, financial charts, marketing analysis, and organizing. If some corporate raider tries to take over Stark's company via law 3579 subsection 247 paragraph 3, she should immediately remember and be able to shut that right down by reciting corporate law 3683 subsection 42 paragraph 2.
Venture capitalist villains should come in all smug, and after fifteen minutes with Pepper, find that not only have they failed to take over Stark Enterprizes, they've lost their own companies and been blacklisted from any job higher than McDonalds frie-dispenser.
But the idea of running around in armor should absolutely appall her. She shouldn't wear armor, she shouldn't be interested in armor, just that entire world is not something she should want anything to do with directly.