It’s not that calling in every day is inconvenient, it’s that you basically have to clear your schedule for the whole week, because you can’t be sure if or when you will have to come in. With the system my county uses, it’s most likely that you wouldn’t even be chosen for the jury, and it’s usually only one day involved.
Of course, there is always that one in a million chance that you could be chosen for a big case that could last a long time, but it’s slim. A coworker of mine was once chosen for a jury for a high profile case that lasted six weeks. Some of that time, they were sequestered. But the chances for that happening to a given individual is pretty minuscule.