is crackling your knuckles bad for you?
no, it will not cause arthritis...that was disproven few year ago...its just a myth
kinda and kinda not, it just pops air-bubbles in your knuckles.
it can cause arthritis in the future...
Yes ...arthritis will set in and it is more painful...
No! Just annoying!
Yes. It will create a gap in your finger joints and swell them in the long run. Because of crackling your joints will get substances ( mainly calcium ) accumulated there which will trouble you in old age.