In an ideal world, you would do all kinds of exercise - and lots of it.

In the real world, any exercise you do is good.

In other words both cardio and weight training are both good choices. However, if you hate doing one -- perhaps you can change it. For example, I can't run due to a bad knee. I think that riding a bike around town is too dangerous. But I can hike and I like the woods. So I take my daughter on nature trails. Also, my treadmill is in front of the tv so I can watch tv and exercise at the same time.

If you don't like one type of exercise -- try to replace it with another that you do enjoy -- biking, swimming, walking, running, aerobics, dance, etc.