Cut out the off topic chatter, please. If you don't like something, please feel free to use the "report this post" button to bring it to a moderator or admin's attention, but we generally do NOT allow chatter in these brewing forums (that's what the "chit chat" area is for). I'm leaving the posts, as there is some actual information in them, but please refrain from making snide remarks and off topic remarks in the future. In other words, stay on topic, or don't post anything at all. Thanks.
Anyway, one of the things to keep in mind with those calculators are for when time is money, such as in a bar. You want to pour a beer as quickly as possible. Also, the temperature is cold and the beer is not particularly highly carbed. The only disadvantage to longer lines at home would be a slightly slower pour, that might take a second or two longer to pour a beer. The advantages, though- no wasted beer due to foaming, predictable pours for a variety of carbonation levels, etc- far outweigh the extra two seconds to pour the beer.
I don't know of anybody who has 10-12' lines who wishes they were shorter!
Anyway, one of the things to keep in mind with those calculators are for when time is money, such as in a bar. You want to pour a beer as quickly as possible. Also, the temperature is cold and the beer is not particularly highly carbed. The only disadvantage to longer lines at home would be a slightly slower pour, that might take a second or two longer to pour a beer. The advantages, though- no wasted beer due to foaming, predictable pours for a variety of carbonation levels, etc- far outweigh the extra two seconds to pour the beer.
I don't know of anybody who has 10-12' lines who wishes they were shorter!