I left Flightsim in 2004 - coming back for FSX 20202 or what ever the name is, moved to 3D graphics. there are 3D programs which are now subscription, especially Adobe stuff, and it is a pain. you stop paying and its stops working, no warning no nothing, is just stops. some of those subscriptions are $60 to $250 a month (US), granted when you could have bought it the upfront cost was upwards of $3,600 (US).
I am sure you may know this but MS will stop extended support for Win7 come this January (2020), so no patches, no security updates, you'll be on your own.