After all, if you don't want to save during combat just don't use the function.
Exactly. This was one of my main points when this debate first came up. There are concerns that a save feature will diminish the atmosphere and tension, and thus the funfactor/enjoyment. In reality though, this is a fallacious argument in that
A: the absence of a combat/battlescape save option actually *detracts* from the enjoyment of those who do wish to use it, which I can only presume to be most people, given that few appreciate having tens of minutes of their time wasted by some lucky shot or freak incident, or RL obligations.
and
B: Those gluttons for punishment who do want to iron man their way through tactical encounters can do so anyways.
Obviously the "preservation of atmosphere" fails to merit imposing what is likely a widely unpopular iron man experience, when in all practicality what this really accomplishes is frustration and annoyance on behalf of the player rather than the intended aim.