If you are looking at 1970's and 1980's homes then your are likely to see that. The paneling at least in this area is really good quality wood, however, some do paint over it. You can have the textured ceiling removed just be cautious that if it is 1980 or older you need a professional as it will have lead base paint. The law changed in 1978 regarding lead in paint but painters, etc were allowed to use up supply on hand so that is why I suggest 1980. You still see some textured ceilings in newer homes as well. Some people sheetrock over it, but it can all get quite pricey.