Having been a bike mechanic in my time, yeah service is a good thing.
Coming Thailand I started my experiments with my Honda Airblade by not changing the Castrol power 1 semi synthetic oil filled last time for 4 years, and 4 years changes previously and never changed the brake fluid for 17 years.
Drain oil the other day and put it back, these little engines are bullet proof if you ask me.
Hasn't done a lot of kilos mind in 17 years but still runs sweet.
Be interesting to see how long it will go before a problem starts.