The second floor of our home is a large converted attic that we use as the master bedroom. I'm fairly certain the carpet is from 1984. It is disgusting, old, and stained. I have seasonal allergies and after 2 years of dealing with whatever nasties live in that carpet, we are going to rip it up.
I pulled up a corner to see what was underneath 30 years of grit. Turns out there were many layers of crap: carpet, padding, more padding, tile, underlayment, and wooden plank flooring that appears to be unfinished.
We had planned on installing real wood ourselves, but this was a good find. It will be a lot of work, but my labor is free.
We have lucked out with our house-wood floors under all the carpet and decent bones in the house. The yard has 6-10 inches of topsoil. We had the unexpected expense of removing 2 storm damaged 70 foot tall silver maples this summer (thousands of dollars, and a crane and no, insurance does not cover that). However, now I've got a sunny, no longer shady, backyard which translates into a larger vegetable garden for the next year.