How to: Roon Mobile over WireGuard on a UniFi USG

Can I ask a dumb question…

If I’m trying to set up a site-to-site vpn to connect my two homes so I can try to support them with a single core in my primary home (see below thread for use case and Brian’s suggestion that I and others pursue this route) and I have UDMPro on one end and USG3 on the other…

…then why would I want to use wireguard as opposed to the “natively unifi supported” OpenVPN to create and maintain the site-to-site VPN? Is it more secure, does it offer other features? Happy to pursue this, just trying to figure out my strategy as a networking civilian with gear that ought to support my goals.