Its not about sacraficing lives... its a bit more nuanced than that.
When they simply keep their installations underground and in civilian populations this, in and of itself, is perfectly normal and accepted gorilla warfare. Its also in many cases (not all) with the blessing of the civilians I suspect. Jews did this during WWII (hiding stashes of weapons in civilian locations) and generally operated covertly and hiding among civlians... all of this is fine.
Where it becomes an issue is when they are actively firing from a location and use children or ciuvilians as shields by not allowing them to leave the zone of fire. This is where it becomes very very wrong... and sadly this is also on par with what israel does where they have been caught using children from palestine as human shields also.