I used to filter, now I don't for a couple of reasons.
The first is safety as I have had had one too many close calls in the last 20 years. The most recent was nearly being crushed by a city bus making a right turn. Motorists are not expecting to be overtaken from the rear while stopped at a light.
The second reason is respect. I have noticed that I am given much more room and patience if wait my turn at an intersection than if I blast to the front of the line only to be passed seconds later by a string of irritated drivers. It has taken many years for me to learn this (I'm slow) but it seems to work for me.