Migrate from RPi 3 32-bit to 64-bit?

I notice that my 32-bit installation is no longer the recommended one. Are there any compelling reasons to migrate to 64-bit? Are there any risks I should be aware of?

Details such as that I am running a Z-Wave.Me Razberry daughtercard make me a little nervous just to dive in and try it.

Why would you run a 64-bit setup on a system with 1Gb RAM?

The only difference I see between the 32 bit and 64 bit OS is the ability to address more than 1G RAM. Being HA doesn’t, I don’t see a reason to go to 64 bit at this time.

Actually, you can use up to 4GB with a 32-bit OS, so if you have a Pi 4 with 8GB then 64-bit would be the way to go but yes, other than that there is pretty much no difference…

Thanks for the replies.