I didn't say that it has no use. I was pointing out that blockchains do not allow "borrowing / lending money to other people without the parties having to trust each other or having to wait for a slow and expensive legal", contrary to what the OP claimed.

I didn't claim you said it, either, just wanted to mention why it can still make sense. However, the process of depositing something as collateral (irrelevant of the value) and borrowing on it can be described as just that, borrowing.