It is always better to service the scooters regularly .This is the most imporatant and easiest thing a scooter owner to do for keeping his/her scooter atleast in proper conditions.
This will drive the owner to think for the scooter regularly and when he takes it to the service stations, if there is any problem found by the service-man, it will come to his knowledge to get it corrected.
Regular service in a way keeps dust/mud/etc out and regular service will see that oil is changed also time to time and thus owners love for the scooter will increase and this will finally lead him not to use the scooter in rough and tough manner and thus life of the scooter gets increased by just simple care.