Flight simulators: not for everyone
Personally, I never got in flight simulators. I tried everything: combat oriented flight sims, copters, planes, everything, but it's simply not my genre. I knew people who spent a lot of money to buy special joysticks, three monitors and other peripherals just to enjoy piloting a Cessna from one airport to the another.
There are already lots of flight sims on Abandonware DOS, but a lot more need to be added. Here's a few: