This sounds like a loooot of fun 
. I’m glad you are having fun with it. There is something magical about connecting to that playful child-like aspect of movement, as it sounds like you are 
.
Specficity is important if you have specific goals, and if you are trying ot maximise your potential… (i.e be as fast as you possibly can be). Likewise, specifcity becomes more important, the closer you get to your potential, and the more seasoned you become as an athlete. But the importance of specificity fluctuates throughout a training year depending on how close you are to your A events.
Although I recognise your tongue and cheek, there is some truth to what you are saying! 
Having a solid base level of fitness will lend well to a variety of activities, as you’ve noticed. And having fun with your training is SO important. If you enjoy your training, you’ll do it consistently. And consistency is key!!
If you’re going after a measurable and specific goal, the details matter; but at some points more than others.
Regardless, keep having fun with it! 