Why even have a Forum on BP?

Ok, so this might get slated as a silly question. Sorry!

If I don't need Discussion Forums can I disable just this part of BP?

I am going to use Groups to hold all forums so still want forums enabled, just not the sitewide forum directory.

eg. http://artfulworks.co.uk/discussions/

Apologies in advance I am a bit muddled by this.

Elliot