Why would you ignore the tip? Points one and three are valid, and you should always hop in before you direct, but ignoring the tip on what is essentially a luxury good (metro is $2.75 a ride and you can transfer as many times as you need to get where you need to go) is quite rude when it&#x27;s expected and part of the culture.<p>If you can&#x27;t afford to tip your taxi driver, take the train. Sorry.