I've never accelerated to close the gap in queueing traffic no, never.So you've let every single person out ever, in every similar scenario you've been in?
Speaking for myself it depends on my mood at the time. Sometimes I do, and sometimes I'm in a rush and don't.
If anything I'm the one letting everyone in because everyone else is too stuck up there own **** hole to do so.
It really doesn't make a **** of difference to me if I'm 6ft further away from work / holiday destination / meeting or whatever. The time difference it would make isn't even countable.