Is logistics company worth it?

So I usually put a logistics company to my tank/mech divisions since it reduces both supply and fuel usage. Recently however I've started to question it's usefulness. The two most common scenarios seem to be.

  1. I have more than enough supply for my needs and the logistics company is barely doing anything.

  2. I am out of supply and the logistics company is doing nothing since you need supply for it to work.

With that being said, is logistics company worth it or should I just use something else?