introductions

A while back I started to add a short (2-3 second) intro to my videos, but someone pointed out to me that I shouldn't do that. Now I have started to doubt myself, what do you guys think? (the video in my signature does not have that intro).

Intros on videos are cool to some and annoying beyond all hell to others. For me as a viewer, I had when content creators have intros on videos because it's just a gigantic waste of time. Like I'm already on this person's channel, I can see their watermark, their channel name, their channel art...