[Tarrccrys]

That is no where near average on our course. We have small greens and so do most of the courses around here other than the resort courses.

Same here, a couple of resort courses have larger greens, i think it's to make the vacationing players feel good about a G.I.R. But by & large most of the greens on the courses I play are no more than 30-35 feet across. BTW I deal with tape measures all day long in my job, measuring everything from 1/16" up to 200'.

Perhaps but I think as many people overestimate the length of their putts like people overestimate the length of their drives. Not everyone is an expert estimator.

Bingo.