Thread:Ecoraptor3339/@comment-25309944-20150423155458/@comment-25309944-20151009165040

If you bring along additional supplies, though, they'll last longer and be more powerful.

It's like relying on the limited cargo capacity of all of your vessels to carry supplies as opposed to having a huge store which will last months. Sure, the ships can replenish their stores, but they're bound to run out of energy at some point due to the first law of thermodynamics.