I don't know about the indoor/outdoor thing w.r.t. UTI incidence in particular. But for those of us not living in small country towns, outdoor cats are not gene

I don't know about the indoor/outdoor thing w.r.t. UTI incidence in particular. But for those of us not living in small country towns, outdoor cats are not generally a viable option so it's all about giving them the best indoor life. Generally speaking, indoor cats tend to live much longer. Generally they make it well into their teens. Of course it all depends I guess. Indoor/outdoor cats living in an ideal rural situation probably have the happiest and healthiest lives of all. (Although, of course, depending on local fauna they may eat a lot of birds, so there's that cost to consider too...)