Your money but you are wasting it. There is absolutely no technical reason to change oil that frequently all you are doing is creating additional waste oil in the world for no mechanical benefit.
Wrong, come October the tenps here will be dropping and according to triumphs factory service manual I should be switching back to 10w-40 oil regardless of the miles I have driven.
Also, buying this motorcycle used I have no idea of the service history. The oil I just drained could have been the original oil for all I know. A couple of early oil changes to make sure all the residual old nasty oil is gone is well worth the cost for my peace of mind.
As for wasting oil, my other vehicle is a gas guzzleing 97 toyota land cruiser that burns about a quart of oil every 1,000 mile. Even if I do perform a couple of early oil changes I am still saving loads of petroleum by riding and using the motorcycle instead of theToyota. This is half the reason I own a motorcycle.