I've been wearing headphones almost exclusively for 8 or so years now. Got in the habit when I worked in radio, preferred the nearfield audio, now I use them all the time, even for TV. I'm nearsighted, so I basically sit at my desk, dual monitors on the PC, 26" TV perched on top.
Yes, I'm divorced, why do you ask? ;)
Been using full ear headphones for 5 years since my beloved "lemonwedge" Sennheiser 414s bit the dust (Sony MDR V150s - I don't get the hate on these elsewhere in these forums, they sound great to my ears with EQing. Maybe I'm used to them).
I worked in clubs for a number of years, so I really do watch the volume level, recent hearing tests show no loss of hearing, considering my age (44), and I've not noticed any loss in any frequency range, maybe a smidge in the overhead high range - over 20K. In my teenage years, I wanted butt rattling bass, but I have no need for surround sound and all that jazz. Maybe I'm getting old. I'm happy with stereo.
The only problem I've run into is since I built a new PC and switched to Windows 7. The audio, even when maxed out, is just a little too low. I know this is a common issue, and I'm current on my audio drivers, so I'm leaning toward building one of the DIY CMoy amps, probably tweaking it into a mixer setup. I'm handy with a soldering iron, and I have a majority of the parts already, thanks to some judicious buying when a radioshack dealer went out of business.
There's so many variations on a theme out there for the amp, it's hard to pick one. Any advice?