As your steam collection cannot be resold doesn't it now have zero monetary value?

I stopped buying games when I realized I don't actually play the games I buy. Some are still in their cellophane wrapper.. I recently signed up to Playstation+. Surprised I didn't do it sooner. £40 a year. Access to 10+ games a month to download and keep while subscription is active. Not going to buy another game for a long while.