I would say running your own node is like asking people to run their own email server, but holding your own keys is more like holding your own ID which everyone with a bank account would do! You don't leave your ID with the bank! You hold it and use it as proof of ownership

I've been in this game long enough to know analogies don't matter, incentives do and don't hold your keys and get rugged, don't get into bitcoin and get slow rugged, not my problem!

Someone's going to have to make the mistakes that will lead to them exchanging their goods and services for any amount of bitcoin in the future, it just isn't going to be me