Why destroy Laketown's bridge?

[Rikae]

Sauron, if that is what you meant by your reply, than perhaps you are "arguing emotionally", because it doesn't seem you read what Macalaure said.

Originally Posted by Macalaure

I see several problems with Smaug landing on the docks.

He wasn't talking about Smaug's ability to walk on the bridges or the docks, but to land on them.