Sidious had Yoda at his feet. The most powerful Sith Lord to ever live had the Grand Master of the Jedi Order right in front of him. Sidious could have killed him right where he stood. Why didn't he? One must understand the way Sidious, and like minded Sith, thinks. Sidious knew he was going to win, but he would prolong the Jedi's suffering just for his own amusement. He is clearly laughing during the battle. He wasn't even concerned. Yoda was a worthy opponent for anyone, except the Sith Lord.
So you agree that is your subjective interpretation. Great. Thanks.
So; you believe Sidious could have killed Yoda. I believe Sidious would have killed Yoda if he could, i.e. he couldn't.
This it were it stands and ends then; we have each our interpretation of Sidious.
At least know we are all being honest about it being interpretations.
And again; the part of your comment I have quoted; this is an example of your bad and dishonest habit; you write this as if it was fact, which it isn't. Don't put it out as if you know "how Sidious and likeminded thinks" more than the rest of us. It's comical.