It's Free Real Estate

I stole their stuff and blew up their village and set lava on things and spawn zombies make it night steal their doors and kill some of them

Then take the zombie villagers and lock them in their own cells and heal them, then force the healed villagers into a lifetime of trading with you

I didn't play minecraft in a while so I don't know if they still have horrible trades

Am I the only one who does not kill villagers on first sight

nah. i dont either