Never said everyone should swing 30... In fact I don't see that anywhere in my post, furthermore I encourage you to swing what you are comfortable with... All I'm trying to get at is IMO (OPINION) the more kickback you have the less likely you are going to be able to MAINTAIN that bat speed through the softball. That is all! Do I think everyone should swing 30's?... Do you see any in my sig? I still think you should swing what is comfortable for you and what you have success with. The te avaerage player on here (REC) it is still my OPINION that there isn't going to be a HUGE difference within an ounce or two. Again this is all my feeling and opinion on this. Not fact!
I quoted two people. I was agreeing with you that the ball's force would have a greater impact on the lighter bat, but the rest was mostly to him. You didn't come out and say it as blatantly as him, but the fact is you're hinting at it as well. You are the first person to address comfort though and that should be noted.
We may all say that we take balance, durability, etc. into effect, but when the Ultras came out everyone would've swung one if they could keep up with the demand. I mean literally 99%. I never saw a team that had one not swing them except for less than 5 players total when the homeruns were up. We all want the hottest bat, and if the extra weight did it we'd at least move up to a 28 if not a 30.
I'm just annoyed when people make declarative scientific statements based on nothing remotely scientific. Not you, obviously, your main statement was about kickback which I agree with even if it's only assumed or perceived kickback.