It's not for everyone. I love the limitations brought on by boating. Power is not a problem unless you make it one. I had a Webasto thermo top fitted from my budget, warm boat and hot water, no problem. When on the cut I have a Honda eu20i if needed to generate more electricity, to be honest, we don't often need it. My constant fear over battery drainage is alleviated somewhat by having a victron gauge. Condensation, just missed out on the de-humidifiers in Lidl so will source one from elsewhere if I get bugged enough to need one.
I am not liveaboard yet but having a boat and using it in the depths of winter wakes you up to cold boat syndrome, next task is a gsm remote webasto switch on unit.
Just love it!