The good old days? You mean, when you had CRT screens which were not as bright as a plasma, but were just as reflective, and you KNEW you were going to have issues if you were in a bright room, and if you had the 'big' 32" display you better be brining a couple of friends to move it into the home, and if you wanted to get a rear-projection setup, your room better be theater dark, and you better be prepared to calibrate it regularly?
Things are certainly different now, but it's beautiful once you understand this basic concept:
For almost every room you are in, there is now a display which actually is designed to work for you! All you have to do is describe your room, your viewing habits, and about what size display you want, and you can get some recommendations. A bit of talk back and forth about what your budget is and you can get the perfect display which will last you for years and years without any unexpected headaches (unless it truly does break).
A dozen years ago, when I got into all this fun, a line doubler cost about $10,000 from Faroudja. A line quadrupler ran about $20,000 or more. Those would get connected to CRT front projection systems that typically ran about $30,000 for just the 300 lumen projector it was connected to.
Confusion for having good options is a lot better than the good old days I would say!