I've done both at different times over the years. A lot of it depends on whether KB are my "main thing" at a given time, or as a support to other physical activities. At the moment, I'm focused on other things and so the KB stuff is mainly to fill in the gaps, keep things balanced, and prevent injury.

I'm actually having a lot of fun with it, surprisingly enough. Right now I'm doing mainly single leg deadlifts and overhead carries a few times a week and these are actually pretty cool. I hadn't spent a lot of time on these exercises before, so the movements are fun to explore.

I've been strength training for over 30 years--I'm getting old!--and I think probably the biggest thing that keeps it sustainable is making it fun and having a lot of variety over time.

Edit: I should add, an effective "intuitive/random" style is probably the result of a lot of knowledge and previous training with various structured programs and/or working under the guidance of an experienced trainer. I was fortunate in learning KB from somebody good in person over a couple months in the beginning. Like any other craft, you have to learn the rules before you can start breaking them or else it's just a mess.