How often do you change your oil

[shady]

In my opinion the frequency of oil changes depends on how long you want the engine to last and the use of your bike, by that l mean do you go long rides where the oil gets hot and burns off moisture in the oil (white sludge in the oil window?) and you use the gearbox less or like me do you use the bike all year round in freezing conditions heavy commuting, up and down the gearbox, 11miles each way to and from work where the oil never really gets hot?  :\ the bike is also used for touring and ride outs, l do around 8-10k miles per year. So on the this basis l change the oil every 3k and the filter every other oil change, all seems well with my Hornet 600 engine so far, it runs great, no oil useage between changes and l ve clocked up 80k miles now. Then theres the subject of what oil should be used  :lol