I have a nearly 4 year old neutered female cat. I have been thinking about adopting another cat, but I fear they won't get along. Current cat is not really social, rarely likes being touched, instead requires attention: playtime, being near (but far enough), etc.
What are your experiences with second cats? Are there age / gender combinations which are the safest?
Edit: thanks for all the replies! Forgot to mention that she is an indoor cat.
Any time you have one cat. Cats are better in pairs.
We usually adopt adult cats in need of a home, but our last adoption was 2 kitten brothers, and they have a special bond that the other cats don't. It's adorable, they still play together a lot even as young adults. We've always had at least 2, so no one is ever left alone when we are not here.