I probably don’t need BOTH cargo bikes, but the Yuba is a nicer bike to ride than the Rad, but the Rad has e-assist so is needed for school pickups etc.
I think any self-respecting roadie really ought to have a spare bike in case the one breaks down, or has a flat when you’re due at the group ride. And maybe a 3rd that just gets left hooked up to the trainer.
And there’s nothing wrong with also having a hardtail.
I’ve ridden all my bikes at some point in the last 3-6 months, usually for a perfectly good reason.