Would you move to a bigger house if you could just to have a better listening room ?

I would not move on the basis of a single reason like audio room. But moving is typically predicated on many reasons or a big compelling one (like a job). Then, while looking for a new house, you keep your eye out for one with a good place for an audio setup.

I was really fortunate to have chosen a house 25 years ago during a corporate job move. The house had two floors and one floor turned out to be my man-cave… library, fireplace, audio room (one of the best I have ever heard), office, bathroom, huge storage room, changing room. The first three areas open and connected to make the acoustics excellent. I was lucky.

We are not all that crazy after all, or so it seems. Bigger property size, yes, definitely, though I don't know what I would do with it. Probably nothing, just more private space.

no one said you are not crazy 😂 that's an entirely different question. We just commented on the move.

The very reason I bought this house was for the symmetrical living room..., but could always do better.

Anyway, I like large listening rooms, I don't have one but I do like them. I would have to replace the speakers and amp, though, if I had one. But my current 250 square feet room with little furniture is actually not bad, it will do.