Theory vs reality: poly not "practical"?

Hey everyone, it's been a while since I posted my own little update, so here it goes.

I'm in a relationship with a mono woman. This came about through some experimentation on both our parts. To her extreme credit, she gave poly a try and found that it was just a bridge too far. So, we decided to break it off while I experimented. During the experimentation, I came upon a few unexpected discoveries.

1. I don't want "spoke" relationships, I want a family. The depth of relationship I want requires a lot of focus.

2. I want other things from life that trump a second partner. For example, I love performing and songwriting. When it comes down to a choice between devoting my energy to a second partner or to music, I think I'd rather do the music.

3. I have to admit that another growing bias came into play: I couldn't really find anyone, poly or otherwise, who had their shit together. Whether you measure it by physical fitness/health or by financial stability, or simply by amount of drama generated, the people I have met come up short. Within my sample group, many were poly, but it seemed like just a way for them to dodge the larger issue that they can't commit to their own life and well-being, let alone someone else's or multiple others.

I'd be interested to hear anyone's feedback or to compare thoughts. At this point, I'm viewing poly more as a good theoretical exercise, but not very practical unless poly is your passion above all other pursuits.

As I explained to my mono woman, I haven't changed how I'm wired. In an ideal world, I'd have my big poly family AND my passion. But realistically, there just isn't time enough for everything.

Does anyone else feel that way? Mono by default?

TL;DR: Poly takes too much time