Forever bypass hot water heater?

First of all, thank you for your help in getting our RV ready for the occasional cold spells down here.

Secondly, we never use the hot water tank. I have a new anode rod in, it's been serviced and ready, but since it's so small we honestly never use it. Would there be a problem bypassing it, as in, always? I don't see a reason filling it up with water and keeping water in there. If we ever get in a position of actually needing it, I could always turn it back on. Thoughts? Thank you in advance,

E.