I replaced my ISP router with OPNsense months ago, and I don't regret it at all
I took the plunge a while ago, and OPNsense is fantastic.

I've been using OPNsense since the start of April, deployed on my Ugreen DXP4800 Plus NAS running Proxmox. What started as a dip into more advanced home networking has turned into an incredibly lucrative and interesting hobby, giving me more control over how I connect to the internet, how devices within my network are handled, and teaching me a lot about both along the way. Plus, it's allowed me to make my internet in general more secure, something that nobody should ever take for granted.