A more simple analogy: it's an insurance. It's certainly wise to subscribe an insurance for your house, but for every single drinking glass you own...? If it'

A more simple analogy: it's an insurance. It's certainly wise to subscribe an insurance for your house, but for every single drinking glass you own...? If it's a tea set you inherited from your great-grand-mother, when you break it the insurance won't un-break it. If your property suddenly needs to be more than a property, chances are that this change will break the LSP or trigger a larger redesign anyway.