There is a lot conversation about this subject and as a final-thought on the subject:
Many experienced riders recommend getting in the habit of manually downshifting, and there is a valid reason why they believe so.
Manually downshifting helps maintain rider-control of their machine (by maintaining power and torque ratios at the throttle at a more optimal configuration) at any moment of riding.
When is this important?
The SE5 downshifts at around 1875 RPM's (or thereabouts). As you wait for the SE5 to downshift at that RPM, you will go through a phase where the "gear-ratio" (based on RPM's) will be at a less than an optimal "power-torque" configuration at the throttle.
During this "phase", in the event you suddenly need to take evasive-action (like if a car turns suddenly at you, or a dog/deer comes out of nowhere and you need to quickly take evasive action), you will find the power to be "mushy" at best. You will then be required to shift fast -- and may not be able to do so in time to avoid the situation.
Thus, the recommendation by more experienced riders to always manually downshift, so they can always have optimal power at the throttle. Doing so will not guarantee your success at avoiding a bad-situation; but it certainly improves your chances -- and when it comes to avoiding an accident, you need all the advantages you can get at that moment.
This is just a rider-safety suggestion that applies to most all vehicles... that's all. Nothing more...
:thumbup: