Being fit can mean so many different things really. What would make you feel fit and what kind of results would you be happy with?

I mean while I'd never really be into it some guys just want to be as HUGE as possible. Some just want to be lean and ripped. Some want to participate in more outdoor activities etc which will be easier with a good base level of cardiovascular fitness.

You might want to do enough resistance work to maintain good long term bone density and enough cardio to go out and play a game of social soccer or basketball or whatever.

You don't have to have really competitive goals but it helps to have goals to keep in mind when you plan your training. I think you might find it easier to decide what training to do and be more motivated to do it if you know specifically what results you're aiming for. You'll see the point of each individual exercise.

Also how much time do you want to spend training?