QR,s
 

:rolleyes: Why are all QR,s put on the LEFT side ?

Well, at the rear it makes it easier to get your wheel in and out without the bulk of the lever getting tangled in with the chain and derailleur, plus it looks cleaner. Since it is easier to keep it on the left in the back naturally the front should match.
Maybe there is a better reason.

Here is an expansion of the original question:

I keep both of my levers facing back horizontal to the ground, how about everyone else?

That explanation makes sense,thanks Mike !

I keep my front lever so it closes and crosses the dropout, and the rear when closed roughly
parallel to the chainstay. Somewhere I got the idea in my head that those locations
would make it more difficult for something to catch the lever and flip it open.

When QRs were first invented by Tullio Campagnolo, the levers were put on the right, front and back. When the parallelogram rear mech became popular, the standard position shifted to the left.

For safety - if you put the QR levers on the right side or if they are not lined up exactly parallel to the fork blade and seat stay the bicycle is likely to suddenly explode in flames!!! (treatment for OCD pending). :lol::lol::lol:

I always have my front QR run parallel to the fork and the rear parallel to the chainstays.

in which direction :)

It is much harder to hook quick release levers in the bunch if everyone keeps 'em on the same side.

Since the crankset (most of) , derailleurs and chain are all on the right, the levers must be on the left to somewhat (futility!) balance the center mass for maximum weight distribution resulting in better handling and balance inertia

I decided to try the other way, just to find out. No problem on the front but in the back I found that my cogs were on the opposit side of the bike from my chain. You couldn't hardly ride the thing.

Take the "BLUE" pill sailor !

Eddy sez: