I used to be a ‘long range’ runner believe it or not. I used to run six out of seven days a week, in any type of weather conditions. But I just never connected with running, until I got in the gym, and found my true passion with weightlifting.
For me, I think it comes down to walking is just boring on a treadmill, I enjoy the element of being outside with fresh air and scenery. I think cardio is really important, I just really enjoy swimming, as it feels more like a full body workout in some aspects.
I didn't workout much this past week because of dental problems. I have surgery scheduled in a few weeks and had two procedures done yesterday so things are feeling better. Yes, walking on a treadmill or indoor track are boring unless you have something really good to listen to. And even that doesn't always work.
I play tennis for HIIT which also helps quite a bit with cardio. But tennis is a tough sport to pick up later in life. I do enjoy running and that makes getting in cardio a lot easier.
Swimming is like tennis in that you need a place to do it and you have to be cognizant of weather if it is outside. You can do it at your home if you can afford private facilities. And it's obvious that you like it a lot because you go through the headache of setting up the ability to participate. Tennis is a bit harder in that you have to schedule with other people but it goes with the territory.