During our lifetime, trends are constantly changing. What we liked 10 years ago is different than the present, trends change, we change. Textured finishes have come and gone and then some have come back again.
Popcorn textures were common in the 60’s and 70’s and thankfully have never returned as a trend. First it was a trend, then it became a treatment to cover imperfections in dry wall installations. Many homes today still have this texture because it is difficult and expensive to remove. There are products to remove the texture and you can scrape and sand. But an easier option is to plaster over textures. The best results are achieved by hiring a professional. A professional will cover the finish with minimal sanding required, the result less of a mess.
One to three coats of plaster are skimmed on top of the texture then lightly sanded for a smooth finish. Average cost $500 to $1,000 depending on the size of the room and the amount of coats needed.