If you really believe the earth is in danger from over population then why don't you kill yourself?
I find it funny that all the people who preach about this issue want other castrated or put to death but they all see themselves as too important to have it done to themselves.
Unless you cut your own reproductive organs off then you have no right to preach to others about over population.
It sounds like there is no fixing this problem so maybe you should look into government jobs programs and housing to get out of there.
Claiming that Christians who do not keep the sabbath, do not abstain from "unclean" meats, and choose to celebrate holidays such as Christmas and Easter aren't true Christians is stupid.
Too be fair this is something that was addressed in one of Paul's letters but it is something certain groups of Christians have always believed. While the other stuff is messed up as long as he practices it himself I see no problem with this.
As I said if I were you I would start looking for a way out since it sounds like he was abusive when you were a child and short of Christ changing both of your hearts there is no fixing this relationship.