I tend to like some realism, at least for mundane things. Sure, once you start flinging fireballs the whole realism thing goes away, but when we are talking about a normal non-magical building, or a sword, or whatever, then I prefer it to be realistic.
On the recent armor topic for example, I would prefer that normal armor is actually something that people could (and would) actually use for real. But I would not mind adding magical and strange armor on to that.
Non-magic = realism.
Magic = whatever.