I was meaning reasonable loudspeakers in a reasonable environment and not unsatisfactory loudspeakers in an unsuitable environment
btw I'm speaking as someone who hardly ever uses loudspeakers these days because I live by a busy, noisy road and if I played loudspeakers loud enough to mask it then it would upset the nice, quiet, considerate people in neighbouring apartments.
Anyway you don't need a special listening room, just a decent size living space and a relatively peaceful environment and you can enjoy even modest loudspeakers. For about 50 or 60 years almost all music recordings have been engineered to sound their best when played back through a pair of loudspeakers, and they usually do. I almost always listen with headphones or IEMs and a crossfeed and I love it and am grateful that the opportunity exists but it isn't the same experience as a pair of speakers projecting the sound forward into the room and actually moving some air, which in turn is not really like being present when the music is made.
So my point was don't worry about perfection because headphones can't really replicate speakers and speakers can't really replicate a live experience. I find I'm pretty satisfied with stuff that is just good enough to let me enjoy the music without creating distractions like massive tonal imbalance or distortion or physical fit problems. This can be had quite cheaply with headphones and IEMs and the tantalising idea of a headphone holy grail is really just clever marketing, copiously fuelled by our collective gullibility and susceptibility to suggestion and so on.
Anyway what happens when you get "the perfect headphone" which renders everything exactly as recorded, and are finally in no doubt at all that much of the music you've ever heard has production mistakes that were expected to be masked in playback on loudspeakers and has been cut, spliced, processed and manipulated such that you can no longer suspend disbelief and just enjoy it.....