Ideas

Horses can't be dropped.

 

Except when you're above a hopper and that you press your drop key, because you never press your drop key except when you're above a hopper. :D

 

Oh, didn't know that. Thanks! :)

 

Why? ._.
This would remove any threat that you would feel from the game.

And how would this help? The command wouldn't even know what way you are stuck, like in a 3 block hole, in a block, in the redstone, etc.

Wow, yeah, you must find some really sucky weapons. Stop using only Uniques and things that are below your level.

There are warnings. Lots of them. It's your own fault for not seeing them and losing "half your inventory."