You're not thinking of becoming Goth, are you?
A Black & White warbler in B&W is just cruel.
It goes through all the trouble of avoiding colour
and then you go and defeat the achievement by
showing you can do better. All nonsense aside,
thinking in B&W and photographing in B&W is a
very good exercise that will teach you to see more
successfully. It should be mandatory if I was running
a photography school.