Advertising is a business model. Right now a lot of things are 100% or near 100% funded from revenue from advertising. This includes the Android operating system (perhaps ChromeOS too) as well as any service from Google (YouTube, etc.) It also includes forums like this one.
If there were no advertising, would you want to pay to watch all on-line videos (maybe you should try Floatplane)? Would you want to pay to be on a forum?
I know people from other poorer countries who don't get ads because ads don't work there, but they still get the "free" services that are funded from our ads. In other words, me clicking on ads funds the internet services in places that otherwise probably wouldn't have them.
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