[jonp888]

No-one is forcing you to stop using Windows 7 if you don't want to. It's just no longer suitable for this specific use case(running the latest steam client).

If you apply the same test to other things you mentioned then often they are the same. They will continue doing the same job if you want them to, but they won't meet new requirements placed upon them, and the only realistic option is complete replacement.

For instance, cars over 20 years old are no longer allowed in central London because they lack emissions filters for particulates which are hazardous to health in high concentrations. These cars are considered ancient and it's acceptable to ban them from one of the most important cities in the world. They're not better, and in this specific case you literally can't still drive it(if you live London).

My 20 year old DVD player cannot play BluRay discs. It's considered ancient, and it was acceptable to create a new incompatible standard. If I want to play the latest discs I'll have to buy a new one.

My dwelling has no gas supply. I have an induction cooker, which heats far faster than either gas or thermal electric whilst also avoiding the dangers of flame and uncovered heating elements. 80 year old pans would not work with it. They're ancient.