2.why is the outside of my house leading into an endless void?

That endless void, is the space between worlds.

Endless, bottomless, and ever expanding.

You can venture through it if you wish, but you’ll only end up back at your own home as the endless abyss simply just loops you back around to where you came from.

In fact it’s a good safety measure if anything were to ever run out into the abyss itself.

Now that said, you’re not going to be able to Traverse the expanse itself, otherwise you’ll just end up back at your home.

Now do not be afraid, the endless white void is completely harmless. Nothing will truly happen if you were to run out into it or accidentally fall into it. The only thing that would truly occur with that event, would be that you would wander across the endless white boy for about a few minutes before eventually returning home.

So with that being said, it is possible to banners someone to avoid if you were to say… Remove or revoke their privileges to your dimension, that would ultimately destroy the doorway or gate way back to your home world and ultimately trap who ever or whatever is out in the void between worlds.

Adding to this, is the fact of the entire avoid becoming weightless like space. As without your home dimension to essentially establish the physics of what is allowed and what is not. The entire void becomes empty cold and most importantly void of any life-giving properties. Meaning whatever gets banished the void will eventually succumb to the void and eventually die. It Does not matter if the creature in question is immortal or not or cannot be killed by any conventional means, once something is banished the void it will die. It’s only a matter of time till it does.

Keep that in mind for future references And do be careful as despite the void being homeless, the effects that I just listed can still happen if you’re not careful.