Google 2-step verification is secure but it can be very annoying at some point, when you need to enter verification code every-time your change your computer. Especially when you travel outside, where your mobile goes dead, internet is short and you try to access Gmail from cyber-cafe or your colleague computer. This kind of situations are less likely these days, but sometimes you just want to disable this Google service for various reasons.
Disabling Google 2-step verification is very easy: