Why is God's love for us conditional on us believing in him and doing what he says?
I truly believe the reason for this is because it is hard to control the people's behavior you are trying to control if there are no consequences. So, the writer's of The Bible couldn't just write that "God loves you no matter what" and "It doesn't matter what you do, you will make it into heaven at God's side regardless, because He loves you." No one would ever write that because it would have rendered the text completely useless toward its purpose. It was meant to be a way to curtail people's unsavory behavior, while also getting them to do things deemed positive for the community (tithe, honor their neighbors and so forth), and it is written as a sort of manual for how to live life to appease some ethereal, unknowable thing that
can then also be blamed for the institution of any and all rules anyone doesn't really like. "It's not me!" says the preacher to any and all complaints, "it's God!"
If a person didn't believe in me and didn't do what I told them to then I wouldn't not love them because of that
If a person literally didn't believe in me, even though I was standing right there, talking to them, and others verified that yes, they could see and detect me, and when I went and (lightly) pushed that person, they reacted, etc. - then I would just think there was something very, very wrong with them in the head.
If a person didn't believe in me and I was nowhere to be found and had never presented myself to them in their entire life, however? Well then it would be
ME who was not quite right in the head if I literally expected them to still believe in me! This honestly doesn't seem like that hard a concept to understand or that difficult a thought to come to regarding this stuff... but some people still make all sorts of excuses for why God supposedly/apparently behaves this way. I don't know... I think it's really, really dumb.
So why is it that way with God? Why is his love so conditional?
It's the people who wrote The Bible, who wanted to only conditionally accept other people, but didn't want to say that themselves - so instead they put it on God. Cowards, in other words. Abject, nasty little cowards.