Still have this issue every once in a while myself. My V-Star 1100 has auto canceling so I never worried too much about it till now. You would think it would become standard equipment now a days.
Even if drivers don't notice you not use your turn signals, that cop two lanes over behind you will. It's also a quick way to get deemed at fault in an collision if you get plowed while making a turn or changing lanes and the officer or witness said you never signaled. The signal has always been a way to cover your own ass. Of course this is all assuming you are actually serious and not just saying such.In all seriousness. I do not use my turn signals. Nor do would it matter much if I did. I assume no one can see me. So I make damn sure no one will become a danger to me.
If they think I am rude because I passed them and got in front of them without signaling- that is their problem. But no one car is ever around me long enough to become a problem. Sucks to be in a cage.
If you are driving a cage- don't expect to get anywhere quickly. Just sip your drank, pick a radio station and chill. Cause you gon' be there for a while.