I observe this too. My generation of friends met in school at first, but as we got older and went to work, meeting someone new became more rare. I saw a lot of my friends starting dating each other in our high-school group of friends years after we left highschool, probably because it was easier than to meet random people. It’s a bit weird though, and most relationships ended rapidly or badly.

So when work and old school friends are no option, and you have no place to make new friends, it does feel logical to turn to online dating.