The way I see it... if you don't expect to replicate living conditions of a suburban house in your boat, it is quite simple and livable.
It will present challenges, but whoever is considering liveaboard lifestyle has to be somewhat adaptable, anyway.
I personally, love it! Imagine, my only maintenance chores include cleanup and occasional peaking in the bilge...
Boat rocks me to sleep, I feel like I am surrounded by the natural world so intimately, and affected by it directly... I am a lot more aware of things around me...
Winter doesn't bother me, it is just another way to experience mother nature.