Kazak restroom 18
In most countries service personnel get paid enough to live on, and they do not have to rely on tips.While intentions are clearly good, (mostly North American) tourists are sometimes not aware of this, (or they know, but they just feel bad not tipping), and they export their generous behaviour to other countries where tipping is traditionally not customary, especially to tourist areas.I have been there many times and always feel safe wherever I am.
In some cultures it might be seen as a bribe, and in some circumstances (for example tipping government workers), tipping can even be illegal.
Think a waiter earning more than the chief of police...
Another problem is that, while tipping was originally intended to improve service, some employers use it to underpay workers with the expectation that tips will make up the difference.
Though by definition a tip is never legally required, and its amount is at the discretion of the one being served, for travellers it can cause some serious dilemmas.
In some circumstances failing to give an adequate tip when one is expected to is a serious faux pas, and may be considered very miserly, a violation of etiquette, or unethical.
In some countries people occasionally get tipped a month's salary.