Good?? Of course not . . Well in as much as it isn't a purnishable offence, its a bad habit and not to mention unhygienic

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In a midst of peeps, it makes you seem ill-mannered, in a crowd it makes you seem uncultured, and in public it makes you appear indecent. Generally, its just a big no no

Unhygienic in the sense that who'll want to shake your hand, or take something from you after having your fingers in your mouth. And the looks people will be passing your way, would strike you dead if they could kill lol
And there could be lots of bacteria under your nails which you freely swallow while bitting them, and human-salive carry its own share *æsj*
Please make them stop, before it becomes a rooted habit and very difficult to stop!!!!!!!