Our life together looks very different today than it did 5 years ago.
5 years ago, Jack and I were just moving in together and each of us had a lot of "stuff". I had tons of books and clothes, random kitchenware, and lots of random decorative stuff. She had lots of "mantiques" and odd pieces of furniture (some of it hideous, some of it awesome).
As we moved in and started unpacking the crates together, it became clear to both of us that we had similar tastes but that we had way too much of everything. I think for the first year, we purged a little but mostly kept 80% of the stuff we had each brought with us.
Now, I look up and see a house that is filled with things that we have picked out together. Really the only pieces of furniture that we have in this entire house that we have not acquired together are the couch and loveseat and a vintage chaise from the 60s. Every single other piece of furniture in this house was purchased or found by both of us, from the mattresses on the beds to the barstools. I kinda love that. It looks like "us" in here and not "Jackhammer over there and Medusa over here".
We still have lots of decorative things that we each brought in to the relationship and have displayed our favorite pieces in the library. Slowly over the years we have cleared out the things that we only kinda loved in favor of keeping the things we really loved. It works for us!