Here is how this works, I'll try to best describe what we all are here and how we are different from normal people
Normal people wouldnt spent more than 50$ on headphones, if that, thats as stretch actually. People are fine with stock ipod buds, or junk radio shack stuff. Thats fine, they dont really care about the audio having high quality and having the same factors as a visual experience has in a tv. Dynamics, clarity, power, ect. These normal people usually cannot tell the difference from a low quality mp3 to a slightly higher quality, we audiophiles can spot the differences and it is very annoying to us. So much so we cant enjoy the music with the lack of something, or any number of factors.
Normal people will go to best buy and stand in front of the giant wall of LCD tvs and pick the one that looks the best, right? Factoring in the dynamics of the video, the refresh rate, lots of things and pay upwards of a grand for it, even a few thousand. Well, its the exact same for us with audio. If you cared about your movies would you be okay with a black and white tv from 1954? Of course not, you want a giant LCD tv that is totally HD and looks incredible.
We audiophiles are the same but just with audio gear. We want that HD experience in audio, and are not okay with junk headphones and gear. So, finally I would say yes, it is worth it to get great headphones. If you have never used an expensive set before, you are in for something incredible and walking into a world you never knew existed. Normal people will most likely look at you like you are crazy for spending all that cash on headphones. But its the same as buying an expensive HD LED tv now and having people tell you, hmm, I cant really tell the different from a this other black and white tv to this LED.
Normal people tend to do that with audio gear. A lot of people just dont hear it ( see it ) even when its right in front of them, they dont hear the dynamics in the audio, the depth and stage, not only that but they really dont at all care for it...this remains a mystery to me
I just feel bad for normal people who dont care about their audio, or cant hear well enough, or simply are not sensitive enough to things. I know for a fact I can pick up on sounds my dad cant. I feel terrible for normies
to sum it up, if you are an audiophile, you likely pick up on sounds differently than normal people, because of that, you cannot settle for junk and you need something clear and dynamic to your liking.