One perception that seems to be prevalent here is that if you are going to use a long hose that you must be wreck or cave diving or you want to look like a tech wannabee.
Most of the divers I see out here that use a 7' hose seem to be doing a lot of recreational dives. I know that is particularly true for many of my buddies. Some of them even dive doubles for their rec. dives. The next time I go warm water diving, I will use a long hose...
Here are some of the reasons why I like using a 7' hose:
Air shares are much easier!
Ascents and holding stops are much easier when sharing air.
Swimming into a current is much easier when sharing air.