I think it's probably a good idea.
IIRC there was a fairly recent, quite serious outbreak in the US, from memory when they tracked it back it was due to an unimunised woman who went to Disney Land/world whilst infectious, and passed it on to dozens/hundreds of others.
Apparently the area the park was located in is also one of the places with the lowest percentage of immunised residents.
Herd immunity is getting more and more important as people travel more easily, and the numbers of the human race go up, as the chances of someone infectious passing it on to those who are yet to be vaccinated (say due to age) is much higher now than it was when people didn't tend to very busy locations all over the place on a regular basis.
The sad thing is that often it isn't the idiots that refuse immunisation that are worst affected by it, but those who were either too young to have it, or have weakened immune systems.
But the really scary thing is, that apparently there is an issue with getting some medical professionals (mainly nurses), and people working in hospitals and care homes to get vaccinated - I think in some states of the US (or at least hospitals) there is a rule that if they don't get vaccinated they have to wear face masks all the time during things like "flu season", but personally if I knew that rule and saw a nurse wearing one for no apparent reason, I suspect I'd request a different nurse (if someone is ignoring vaccination advice whilst working in a hospital, I'm not going to trust them to not ignore other fairly basic advice/best practice).