I'm trying to remember why I never bought one, despite a superior image and refresh rate, I want to say they were relatively expensive, heavy(?), and delicate.
Yeah, price, LCD/LED became way more cost effective (think about the wide range of usage in LCD based tech). They're definitely heavier in equivalent sizes, though not an issue with, for example mounting (we have ours on a full adjustment/tilt, 27" drop system, wall mount).
There was also a bit of an urban legend about power consumption, but even at 2X-4X (depending on the LCD lighting tech), we're still talking in the $60-80 per _year_ territory. They also run a little hotter (as you might expect from the additional power consumption), but I've never noticed it contributing the room temp in any meaningful way. Our Panasonic, even with the additional heat is very quiet, so no fan issues when it comes to cooling.
Btw, yes I am one of those that prefers a good plasma TV for 1080p playback over LCD/LED 1080p counterparts. - For all the right reasons. Plasmas didn't die out because they were inferior but rather they were cost prohibitive and were not going to do well in the upcoming 4K world.
I almost scored another one when they were clearing some of the new Panasonics out (through Amazon), just to store for future use, but figured that was kind of silly waste of money - plus, by the time ours is ready to replace, the current LCD based tech (or even OLE) will be excellent.
In fact, in the very near future, we're thinking of moving the Sony to the playroom, the Panasonic to the bedroom, tossing the Toshiba (currently in the playroom, it had a good run
😀 ), and replacing the main set downstairs with something non-Plasma.