I LOVE the original hardwood floors in my old house. They are oiled, are not at all slippery, feel nice on my bare feet and are very easy to take care of.
My friend has a lovely home and has replaced most of the carpeting with hardwood. We have the same contractor. She had her floors finished with an expensive, very hard finish that took several applications. The floors are high gloss, and are definitely scratched.
My floors are oiled, with no gloss, not at all slippery, with just a nice gleam to them. Except for where I have dragged the furniture across it with no protection, there are no scratches on it. Unfortunately, it is deeply stained from years of icky carpet with stuff spilled on it by renters and not toweled up, paint dripped on it by the former owners, etc. Refinishing it is not an option, due to location of the floor.
I researched this and have spoken with my contractor about it. We both agreed that my best bet would be a hardwood floor finished with tung oil. My reading found it to be very durable, easy to maintain, not at all slippery, safe and beautiful. I can't wait to see what my contractor comes back to me with!
I have tile in the mud room (house entrance), kitchen and dining area. I went with a lovely blue green ceramic tile, with swirls of cream in it. When it was first laid, it reminded me of walking on a globe of the Earth
I still love it, and it's been great for puppies and litters (I sealed the grout to prevent staining and odors). It is however cold on my feet, very hard and slippery.
When all is said and done, I will have carpeting only in the bedroom and office. I'd replace that too, but I have no idea how to do that, with all the furniture and stuff in those rooms.