Okay Commander Troi is a different kind of animal from your average Counaselor. She is empathic, which means she's FAR more useful in combat or odd situations than usual. She can sense an enemies treachary, or be there to guide the captain in making a decision that's difficult. Troi didnt just play ships therapist, she was also the eyes and ears of the entire crew, which is extremely useful to a captain in a lot of situations. If it was an average therapist without this ability, you probably wouldn't see him/her on the bridge much unless he'she had some extra abilities, like command training. TNG was the only series with a regular counselor on the bridge. Ezri sometimes, but that was mostly just on the Defiant, and she seemed to just be there to help out. Didn't she have some medical training as well? I can't remember her character that well.
As for families on board ships, that started could have resonably started to happen in the 2340's and 2350's. The USS Saratoga had families on board, and that ship is OLD. the Ambassador class was pretty enormous, so it seems reasonable to conclude it had civilians and families as well. The Nebula class most definately has families, as does the Galaxy class (while not in war time that is.), and the Intrepid class has been shown that the crew quarters can be re-worked for families and civilians. It might be small in terms of decks, but in terms of internal volume it's bigger than a Constitution and simliar in size to an Excelsior. As for the Sovereign class, I dont think initially it will have families, as it's design is leaned more towards a battleship/heavy cruiser motif, and it's still close to the Dominion war. But I think eventually it will happen, it's certainly big enough. 24 decks, 3 m/deck with a w/ 1 or 2 meters in between for subsystems and jerffries tubes (first contact), it has a height of roughly 100 meters and a length of about 710 meters. More than adequate enough for families.
Families and civilians became more prevelant as ships were able to extend their missions from 3-5 years, to something like 10-15 years at a time without seeing families. Be gone for that long and you miss your kids entire life.
As for families on board ships, that started could have resonably started to happen in the 2340's and 2350's. The USS Saratoga had families on board, and that ship is OLD. the Ambassador class was pretty enormous, so it seems reasonable to conclude it had civilians and families as well. The Nebula class most definately has families, as does the Galaxy class (while not in war time that is.), and the Intrepid class has been shown that the crew quarters can be re-worked for families and civilians. It might be small in terms of decks, but in terms of internal volume it's bigger than a Constitution and simliar in size to an Excelsior. As for the Sovereign class, I dont think initially it will have families, as it's design is leaned more towards a battleship/heavy cruiser motif, and it's still close to the Dominion war. But I think eventually it will happen, it's certainly big enough. 24 decks, 3 m/deck with a w/ 1 or 2 meters in between for subsystems and jerffries tubes (first contact), it has a height of roughly 100 meters and a length of about 710 meters. More than adequate enough for families.
Families and civilians became more prevelant as ships were able to extend their missions from 3-5 years, to something like 10-15 years at a time without seeing families. Be gone for that long and you miss your kids entire life.