Should tipping be necessary?
Tipping may not be a good system, whether its done in America, Europe, or Asia. In fact, in many of these countries tipping is not a part of the national culture.
In countries where gratuities are the norm, some employers pay workers with the expectation that their wages will be supplemented by tips. Some folks criticize the inherent social awkwardness in transactions that involve tipping, the inconsistency of tipping for some services but not similar ones, and the irrationality of basing tips on price, rather than the amount and quality of service.