Whether “everyone does it” has no bearing on it being what should be done. Most people also speed up on yellow lights, but you should be doing the exact opposite.
In the former sort of country, drivers are expected to use their judgement and often drive slower than the limit. In the latter sort of country, driving at the speed limit is rather... limiting, thus it is common to see drivers slightly exceeding the speed limit.
(I have a theory in my head that – in general – the former sort of country has far stricter licensing laws than the latter. I am not sure if this is true.)