I have bad news for all about that. Almost all consumer sets are 5 year designs. No, that does not mean we can expect 5 years of life but on average it appears to be about 5 years and you replace it.
Why this is has been kicked around a lot so I won't get into that here. It all has to do with consumers, prices and competition.
If the makers were in competition over life span you would see more than the paltry 1 year warranty offered and well, just try to get a 5 to 10 year warranty. As Ralph Wiggum says "That's unpossible."
So back to the reviews. LG, Samsung and such reviews are all about new sets, picture quality, features and PRICE. Few if any reviews get into life span or how curved screens are lower in reliability or "not able to take a hit."
So I understand the different screen technologies available and tend to agreed that OLED is very good. Love the blacks and color balance and brightness. But I have two LGs with OLED and one failed at 3 years with over heating issues and the other just plain died - complete power failure - no illumination of the LG logo - solid brick. So, my wife and I are uncharmed by the many reviews that put LG TVs 1st or 2nd best brand. I wonder if they are somewhat biased by the screen quality and perhaps pay less attention to the over all quality. My 10 year old Samsung still runs well (barley noticable deterioration of brightness). Heck, my old Phillips is still chugging along at 13 years. Am I just the rare unlucky LG owner, or are the tech writers mesmorized by the picture quality and less interested in quality in total ? Is anyone else having problems with LG's quality? I'll admit we are biased by the fact that 4 LG kitchen appliances we have all had huge, what could only be call lack of quality issues. But, is it only us?