Wouldn't that be heavier by volume, have less mechanical resiliency by volume (no internal rigidity), and have more complicated physics (free flowing, capable o

Wouldn't that be heavier by volume, have less mechanical resiliency by volume (no internal rigidity), and have more complicated physics (free flowing, capable of convection/rotation)? Maybe a big block of water ice... but honesty, seems to to have pretty limited utility. If long distance space exploration relies on lifting water vs harvesting it, then it's kind of a nonstarter?