It may sound crazy at first, and your initial response might be "I could never do that" but the best way to enjoy playing the piano and making music is to share it with others. Yes, I know most people do enjoy playing for just themselves and their own amusement. And that is great! But they would probably find it even more satisfying to play for others. Now I am not saying you should book Carnegie Hall (maybe just not now, but you never know) but as simple as immediate family members for starters. Get comfortable, graduate to extended family, then on to friends and strangers at parties and other get togethers.
How “good" of a piano should I buy is a question probably asked since Bartolomeo Cristofori made his second piano. It is actually a pretty easy question to answer with the standard "buy the best one you can afford" retort, but that seems a smug answer to the uniformed. In most cases the "uninformed" is the non-playing spouse of a player, and the non-playing parents of a student.