I notice in a search for brake levers that single right levers are easier to come by than single left.

Using a 'safety brake' on a fixie i thought common practice was to put a brake on the left side for the front brake. Yeah I know it can go on either side but I thought that was the convention since people are instinctively used to pulling the left lever for front brake.

So, do people prefer left or right? (I prefer left for myself but I build bikes for others so I would like to get a consensus)