Everyone to there own.
But you cannot beat an open fireplace.
I agree with both the previous posts, as for affecting the value of the property, try to keep most of the original features as these can affect the value of these types of property if removed, tho i'm not talking drastic valuation.
I moved into my house and the fireplace had been removed, but the chimney was still intact so i went to a salvage yard to get an old cast iron fireplace, then i put in antique mexican wood surround, the fire is not in working order as part of the chimney was removed and pinned, but boy do i get alot of comments about it, i themed the whole of the room around this, i mixed the old {antiques} and the new {computer} etc.
I recently had my house valued and was well chuffed when the estate agent commented on the room with fireplace.