Is it bad practice to write to the registry?

just for settings later and using a standalone executable with no way to remove it? Because I did, I do, and don't care. It just works.

i don't give a fuck what's in my registry.
config files piss me off because you delete them and you're setting's gone.
write 'em somewhere deep in the registry and i dont hafta care about 'em. see no evil, hear no evil, speak no evil