I will play until the last character in my party dies, then of course I have to reload. If it is a game where a dead character stays dead forever - then I still reload, and try a better strategy. I do not reload at the first death of a party member though, I try to see if I can beat the fight despite it- sometimes it's especially satisfying to survive a fight with just one character left barely standing. But I never keep playing in situations where characters have become permanently dead and there is no way to bring them back. I will keep dead characters in tow for a very long time as long as there exists at a distant point down the line even a remote possibility that they can be brought back (the chance of buying a revival spell at the local temple, or finding a scroll, etcetera…)
So I voted 'never reload' with the viewpoint that this is referring to games where death isn't permanent.