They could be short trading ETH. They could just want to create havoc. Why did people deface websites long before online ransoms were a thing? I don't think bad people need many incentives to do bad things. I may be wrong of course.
> If the node is secured physically they would need to break into a person's house and decrypt whatever security setup they might have in place.
But that's not how most exploit work. Most exploits, and by very far, are 100% software.
I mean: it's for the very reason that computers aren't devices to be trusted that many are protecting their coins using hardware wallets.
I don't know what software is needed to stake Ethereum but I'm pretty sure it involves a huge software stack.
Seriously: I don't understand how, on one hand, there are people holding the keys to move their ETHs on hardware wallets who are, on the other hand, staking these ETHs on a purely software stack. It makes approximately zero sense to me.
If you're certain your node can be trusted to safely stake your ETHs (as in: there's not risk of your ETHs getting slashed in two), why bother with a hardware wallet? Just keep the private keys that allows to move your ETHs on your node too, because you consider it's safe anyway?
I don't know: I may be all wrong on this but it sure makes no sense to me.