How good is your driving record and what do you expect in your near-term future ...
If you already have tickets on your record in the last 3 years and there's still some time remaining before they drop off, then fight the ticket. If nothing else, this can delay having the conviction on your record until (hopefully) a previous one drops off.
On the other hand, if you have a good record, and this is going to be the only one on your record, and you have no plans of doing "something" that involves forcing your insurance company to check your driving record (e.g. new vehicle, move house, etc), and you're prepared to be a good little boy for the next couple of years so as to hopefully avoid getting another one ... I wouldn't bother, just pay it. One minor ticket on your record will usually have little impact on insurance, and unless you "do something" that causes them to check your record ... they may not even find out.
Unless you have a good solid legit defense (and most people don't), there is little chance of completely escaping the conviction unless by chance the officer doesn't show up in court, and they schedule their court dates so as to minimise the chance of that. Do scrutinise the ticket for errors - wrong location of incident, wrong time of day, etc.