Originally Posted by
FBinNY
I agree, with typical BB height he top of the pedals is about 4" off the ground. If the bike is fitted via the heel on pedal with leg straight method, that means that the rider can use his ankles to reach the ground, with his foot at the same angle as a woman wearing 4" heels. That may be OK if you're used to wearing 4" heels, but most people find this a somewhat tenuous foothold.
Add to that that we're talking about a straight down distance and you really want to reach out to the side for good support.
So while it's possible to toe down from the seat, most people with a correctly adjusted saddle will prefer to get off it while waiting for a light to change or whatever. Even after almost 50 years riding I still love to find a bit of curb when stopping for lights.
I only stay on the saddle when I have something to lean against, like a light pole with a crossing button. Otherwise I find it easier to start standing over the top tube with my left foot clipped in. That way you can thrust yourself forward and onto the saddle and clip the other foot in easily and quickly. Staying on the saddle you can't thrust forward and you balance isn't very good to get a good start.