I like so many different things/styles, that I purposely chose not to lock myself into one particular style when choosing how to decorate my house.
I do see homes where there is a very constant style, color scheme etc throughout a home, and it is lovely when done that way.
I just really like several different styles, wanted to enjoy buying what I loved (and sometimes you have to pass up things you find and love, because they aren't in the 'style' of your decor/home) and so I made different parts of the house reflect different feelings/periods/styles.
The family room is more country/primitive. There is mission oak, hand stitched samplers on the walls, kind of a barn siding (painted) feel to the walls. etc.
The master and guest bedrooms are very feminine with slight Victorian touches. Vintage Rose quilt patterns, lace curtains etc.
My son's old room is rather masculine, with mission oak furniture, tans and browns, and lacks a lot of the 'fru fru' the other two bedrooms have.
The main level of the house has a lot of antique oak pieces (and a couple of reproductions made to look from that era) but neutral upholstered furniture walls floor coverings etc. to not make it as Victorian or feminine as the wood furniture would lead one to believe it should be.
Sometimes I think a single style is more calming and serene in a home, but I love the variety and the interest of different layers of style.
The one thing that is constant is the fact that every room in the house has a Tiffany style lamp somewhere . I find them to be perfect for just about any style.