I was under that impression for the longest time until I got a proper hifi speaker setup. Ever since then, I BARELY use headphones.
Speakers take a LOT of work to get sounding their best. You need to treat your room, find the best placement, integrate them with a sub. Alot of tinkering.
But once you get it right? Headphones are easily blown out of the water. It's a fully encompassing and 3d experience. The soundstage is nothing short of SCARY real.
I'm VERY into DSP and measuring speakers and that's the other incredibly fun part. I get to actively see what my personal speakers frequency and phase response is and correct it, which really can't be done on headphones without an expensive measurement rig. A good room(and speaker) correction algorithm or process can essentially make the speaker completely disappear and just leave you with a room filled with the music.
Also speakers have crosstalk which headphones don't. That's one of the main reasons why I think speakers are better. That crosstalk is essential for realism imo.
Anyways sorry for the wall of text, I really want to see more people on here experience the magic of speakers ๐
I wouldn't say that ANY headphone has ever come even remotely close to the satisfaction of speakers for me but the CLOSEST has been the ATH-M70X. yes. The "treble spike" is extremely misunderstood and I have ZERO clue why people don't give the headphone a chance. Never done enough justice imo