Don't think I duplicated any already posted but I could have missed one.-- Good luck B'ski sorting this list out.
Let's see, reasons to own a pond.......
1- Sanity Maintenance (Tied with Single Barrel Jack but that's not pond
related for your purposes - But they sure go together nice in my world)
2- Catching fish- (never keep 'em & don't eat 'em)
Dan