At the end of the day, hatha yoga is still a movement based practice. Very simply, this is why I believe the art of asana needs to be viewed with a broader spectrum beyond forward folds, twists, binds, backbends, and inversions.
What may seem balanced to one individual, may not be the case for someone else. It depends on many factors. Some of the obvious ones are: genetics, lifestyle, proprioception, pre-existing conditions (known and un-known), personality (yes, this is a big one), and environment. Environment could include the teacher(s), props if available, and temperature.
For me, and let me say that again...for me, I found that the physical practice was not enough to build a strong balance in my body. Yoga is an opportunity to study the self and our patterns. We can then research what is needed to either create more stability or opening.
It's true. I'm a rogue Ashtangi. I don't practice early in the mornings. I practice after workouts around 10:30am. I also do 4-5 times per week strength & conditioning along with other accessory work necessary to rebuild my body. Oh, and I do the occasional Rocket yoga because it's fun and frankly I feel it compliments my Ashtanga practice.
I'm a lone practitioner 99% of the time. I've come to terms with it. While I loved and still love the energy of a large group, it doesn't determine whether or not I practice.
So yoga is enough. I found it in other forms outside of asana. In turn, I feel more at peace and harmony.
Follow your heart and intuition. Question dogmatic thinking. Search for answers. Be open minded. Define your practice as you deem fit for you.