Mivaksheyemes “1)The Netziv answers why hashem killed them but we need to understand why in the world so many people didn’t want to be freed from slavery. It also doesn’t answer why 80 percent of klal yisreol being killed isn’t a huge tragedy.”
The Netziv writes that the 4/5 who didn’t want to go out – did not do Avodas Perach. They had nice jobs and nice homes and just had to pay taxes to Pharaoh. This is why they wanted to stay.