I'm typing this on an 8-yr old ibuypower PC. Ok, I did just replace the power supply about a month ago. Other than that, no problems. I have added RAM and storage to it,, and have replaced the CPU with a faster one, and not because the old CPU was having problems. Also upgraded from a CD-RW to a DVD+-RW, upgraded the graphics card a couple of times, and added other peripherals. It was a pretty decent gaming platform right up to when Battlefiled Vietnam was released. After that, most of my gaming has been on the consoles. It's REALLY showing its age though, but still good enough for surfing. Haven't had really bad experience with them.
Just my $0.02.