IMO, No, not required. I never get mad at people who break my pipes or w/e. If it is a real friend they would just buy another one anyways, b/c that what i would do if i broke a friends pipe, But that;s just me. If the person was a dick about it, i probably would'nt. It would honestly depend on how the person reacts. If they didnt sweat it and were cool, then ill come thru with a piece that was probably badder than before.