Sure, older cats can be great companions, especially ones that are, say, 5 years old and up. They're still young and have a lot of good years left but not so young as to be rambunctious and into everything, although there are exceptions to the rule. As long as you check everything out ahead of time, that you're allowed to have a cat where you live and you realize the expense involved, go for it! I think it's a great idea!