I agree, energy problems were plot points, but they were often connected to equipment malfunctions as well.
If replicators were a non-trivial amount of energy as compared to warp drive they wouldn't allow such frivolous use of it constantly on the ship, every hour of every day.
Replicators can replicate nearly anything except very specific complex materials. The limitations they have is in the amount of energy required to create the object and whatever items they are restricted from creating. So the replicators in rooms only have access to enough energy to create typical items you might need your room. Although I believe they can create weapons as well but that would be restricted if your restricted to your quarters due to misconduct. If you require bigger and/or more complex items there are one or more locations on the ship that function as "shops" were you can obtain such items. Plus there's a theory that hasn't been shown anywhere that I'm aware of is that there are large replicators on ships that are capable of creating parts for the ship which would make sense. Star ships would be created with very large part replicators located at orbiting ship yards. Not large enough replicator nor energy source to just create an entire ship from a replicator.
You could replicate a living being because that's the same technology used in the transporters. Beaming down to a planet and back means they replicated you twice. It's just that I would imagine there would sever restrictions on replicating living things for various reasons (ethically, legally, and for safety) and is only allowed via transporters with trained personnel. There could be a discussion over what the "characters" inside the holodeck actually are as they are most likely created with the same technology and have been shown to become self-aware. There have been suggestions that these "characters" are in fact real people but as far as I know they never directly addressed exactly what they are in terms of "living beings" or not. Other suggestions from the show suggest they could be projections and contact with them is handled via clever uses of shield technology but I'd like to know how they simulate the feeling of warm skin with shields. It would mean Riker is always kissing moving force fields, which I wouldn't put past him.
If replicators were a non-trivial amount of energy as compared to warp drive they wouldn't allow such frivolous use of it constantly on the ship, every hour of every day.
Replicators can replicate nearly anything except very specific complex materials. The limitations they have is in the amount of energy required to create the object and whatever items they are restricted from creating. So the replicators in rooms only have access to enough energy to create typical items you might need your room. Although I believe they can create weapons as well but that would be restricted if your restricted to your quarters due to misconduct. If you require bigger and/or more complex items there are one or more locations on the ship that function as "shops" were you can obtain such items. Plus there's a theory that hasn't been shown anywhere that I'm aware of is that there are large replicators on ships that are capable of creating parts for the ship which would make sense. Star ships would be created with very large part replicators located at orbiting ship yards. Not large enough replicator nor energy source to just create an entire ship from a replicator.
You could replicate a living being because that's the same technology used in the transporters. Beaming down to a planet and back means they replicated you twice. It's just that I would imagine there would sever restrictions on replicating living things for various reasons (ethically, legally, and for safety) and is only allowed via transporters with trained personnel. There could be a discussion over what the "characters" inside the holodeck actually are as they are most likely created with the same technology and have been shown to become self-aware. There have been suggestions that these "characters" are in fact real people but as far as I know they never directly addressed exactly what they are in terms of "living beings" or not. Other suggestions from the show suggest they could be projections and contact with them is handled via clever uses of shield technology but I'd like to know how they simulate the feeling of warm skin with shields. It would mean Riker is always kissing moving force fields, which I wouldn't put past him.