Why do people weigh their fish?

[afterhours]

i fish mostly c&r (i kill a couple for the table each year) and i weigh and measure large. i like to know my pb and yes i always carry a scale and tape...even on the ditch.

[BigFish]

No no scale in the surf Chris. I only keep/weigh maybe 6-8 fish a year.....mostly table fish 18-24 pounds.....maybe a couple larger if I get a PB.

[JohnR]

I weigh a few - almost always just what I keep - which isn't many - mostly guess as I can be within a couple pounds.