@Opticalwinter @CrimsonSix The problem with this kind of fiction is that there are as many views as people, and the Author can't possibly cover them all.
Personally, I agree. He can't save every single female in the world, but by having sex with 2-3 different ones each day, he'd soon save the whole city AND start repopulating. And maybe the babies are not cursed?
Putting himself in harms way is 120% moronic.
But let's think about the other options for a bit.
Misaki already tried to kill him. Let's suppose all 3 of us agree that was absolutely moronic, and maybe even "unrealistic". Except we know Karens exist. "Unrealistic" is a VERY loose term. A random psycho woman might kill him too.
Then, as single purveyor of mating, some poweful women (Queen?) may decide to "keep him safe"...by locking him in the castle. What do we do with pandas? Again, personally I don't think a life of being fed and sexed is all that bad, but jokes aside, I'm sure there are guys out there who'd want more out of life.
Plus, reallistically, how many times can we really go? 5 a day absolute tops? We're not porn actors. 2 hours? That's a lot of day left at the end of the sex.
Give a further twirl. Some powerful chick decides 5 a day is not enough. Maybe they can drug him to increase his stamina. And if he refuses, well...maybe he doesn't have the right to refuse. After all, the fate of humanity depends on him.
Or maybe, seeing how the chicks go fuck-crazy, some women decide just one time to free the curse, and no more sex ever, is not enough. Maybe they kidnap him and lock him in a basement to keep him for themselves.
Y'know, I think that (^) is then kind of "discussion" or "inner monologue" that sometimes should apear in a WN/manga, but that I feel would bore 95% of the readers.
Point is, I'm sure there are even more possibilities than the ones I just came up with, all bad and dangerous in some way. So author picks the one that can get the story rolling, and tries to give a reason (and fails at it cause this author isn't exactly amazing).