I won't use the word "useless" here, because they are "spineless". Useless people has tried, even if they fail and become a burden. Spineless people don't even try, and demand people that have tried to cover for them. So what's the point saving them? He just said that they can safely eat there...
The moment she mention about limitless energy, I'm bought. Forget about making child and all, just let me switch with that loser and I'll help her making a country.
I feel like reading a manga with housewife, NTR, and cheating tag. If you've been paired, then it's your responsibility to commit to it. It even called Marriage Practical.
Wait, did he just pray to god when he himself was (or should I use "is" here?) a god? Didn't he call himself a god swordman or something back at early chapters?